You notice a few drops of blood on the carpet. Your usually calm dog is suddenly restless, licking herself and following you from room to room. Then the male dog down the street starts howling outside your fence. If you own an unspayed female dog, this is the moment you realize she’s gone into heat.
For many first-time owners, a dog’s heat cycle is confusing, a bit messy and stressful. How long will it last? Is the bleeding normal? Can she go for walks? Can she get pregnant? What do you do about the mess? And what’s the deal with those dog diapers?
Here’s the short answer. A dog in heat, also called being in season, is in the fertile part of her reproductive cycle. Most unspayed female dogs go into heat about every six months, though it varies. A heat cycle usually lasts about two to four weeks, with bloody discharge, a swollen vulva, frequent urination and behavior changes. She can get pregnant during the fertile days, usually in the middle of the cycle. To manage it, keep her on a leash outdoors, away from intact male dogs, use washable or disposable dog diapers to control the mess indoors, protect furniture with washable covers and watch for signs of trouble such as foul-smelling discharge, fever, lethargy, excessive thirst or vomiting. And talk to your vet about the best long-term plan, including spaying.
This guide explains what happens during each stage of the heat cycle, how to recognize the signs, how often and how long heat lasts, how to care for a dog in heat, how to choose and use dog diapers, how to protect your home, how to keep her safe from unwanted pregnancy, how to live with a male dog in the house, what to know about spaying and when to call your vet. It ends with 30 frequently asked questions.
Important: This guide is for general information, and every dog is different. Your vet is the best source of advice for your dog’s health and reproductive plan.
Quick Answer: Dog in Heat Cheat Sheet
| Question | Short answer |
| How often do dogs go into heat? | Usually about every six months, though it varies by breed and dog |
| At what age is the first heat? | Often between 6 and 12 months, later in some large and giant breeds |
| How long does heat last? | Usually about two to four weeks in total |
| When is she fertile? | Usually in the middle of the cycle, often around days 9 to 14, though it varies |
| Is bleeding normal? | Yes, bloody or pink discharge is normal during heat |
| Can she go for walks? | Yes, on a leash and away from intact males |
| Can she go to the dog park? | No |
| Do diapers help? | Yes, for indoor mess, but they aren’t birth control |
| Should I bathe her? | Yes, gentle cleaning is fine, and a dog-safe wash is okay |
| Can she get pregnant even with a diaper? | Yes. Keep her away from intact males |
| When should I call the vet? | Foul discharge, lethargy, vomiting, extreme thirst, heavy bleeding or heat lasting well beyond a month |
| Should I spay her? | Ask your vet about the best timing and options for your dog |
If you remember one thing, remember this: a dog in heat can get pregnant, so supervision matters more than any product.
What Does “In Heat” Mean?
When a female dog is in heat, her body is preparing to mate and have puppies. Hormone changes cause physical and behavioral signs that make her attractive to male dogs and, during the fertile window, receptive to mating.
The medical term. Veterinarians call this part of the cycle estrus. The full cycle includes four stages: proestrus, estrus, diestrus and anestrus. In everyday language, people say a dog is “in heat” or “in season” during the proestrus and estrus stages, when bleeding and swelling happen.
It isn’t a disease. Heat is a normal part of an unspayed female dog’s life. It’s also a reason many owners choose to spay.
It’s different from human menstruation. Dogs have bleeding in the first part of the cycle, but it happens before ovulation, in the stage when she’s becoming fertile. It’s not the same as a monthly period.
It’s hormone driven. Rising and falling estrogen and progesterone affect the body and the behavior.
The Four Stages of the Dog Heat Cycle
Stage 1: Proestrus (About 7 to 10 Days)
This is the “getting ready” stage.
What happens:
- The vulva begins to swell.
- Bloody or pink discharge appears. It can range from light spotting to a steady flow, depending on the dog.
- She may urinate more often, and her urine may attract males.
- She may lick herself more.
- Male dogs become very interested, but she usually isn’t ready to mate. She may snap, growl or sit down to avoid males.
- Some dogs become clingy, restless or moody.
Fertile? Not usually yet, although you should still keep her away from males. Timing varies.
Stage 2: Estrus (About 5 to 10 Days, Sometimes Longer)
This is the fertile stage.
What happens:
- Bleeding may lighten, becoming pink, straw colored or watery, though some dogs keep bleeding.
- The vulva is swollen but may be softer.
- She becomes receptive to males. Many dogs “flag,” moving the tail to the side and presenting the rear.
- She may be restless, affectionate or distracted.
- She may try to escape to find a male.
Fertile? Yes. This is when pregnancy can happen. Ovulation often occurs soon after estrus begins, but the exact timing varies from dog to dog.
Stage 3: Diestrus (About 60 to 90 Days)
This is the stage after heat.
What happens:
- Discharge stops.
- The vulva returns toward normal size.
- She’s no longer receptive to males.
- Hormones remain high for weeks, whether or not she’s pregnant. If she’s pregnant, this stage covers pregnancy. If not, some dogs show signs of a false pregnancy.
Fertile? No.
Stage 4: Anestrus (About 3 to 5 Months, Varies)
This is the resting period.
What happens:
- Reproductive hormones are low.
- No signs of heat.
- Her body prepares for the next cycle.
Fertile? No.
Putting It Together
| Stage | Typical length | Main signs | Fertile? |
| Proestrus | 7 to 10 days | Swollen vulva, bloody discharge, male interest | Not usually |
| Estrus | 5 to 10 days | Lighter discharge, flagging, accepts males | Yes |
| Diestrus | 60 to 90 days | Hormones high, signs fade | No |
| Anestrus | 3 to 5 months | Resting period | No |
Total time “in heat”: Proestrus and estrus together are usually around two to four weeks. These are averages. Some dogs have shorter or longer cycles, and some have very light bleeding that owners barely notice.
Signs Your Dog Is in Heat
Signs can be dramatic or subtle.
Physical signs:
- Swollen vulva, often the first sign
- Bloody, pink or straw-colored discharge
- Frequent licking of the genital area
- More frequent urination, often in small amounts
- Slightly larger or firmer nipples
- Tail held to the side during estrus
- Changes in appetite, either more or less hunger
- Mild fatigue
Behavior signs:
- Restlessness or pacing
- Clinginess, or wanting to be alone
- Irritability or mood swings
- Increased interest from male dogs
- Attempts to escape the yard or house
- Mounting or humping behavior
- Marking indoors with urine
- Nesting behavior, such as rearranging bedding
- Less focus on training
- More vocalizing, whining or howling
Signs from outside:
- Neighborhood male dogs gather near your home or fence.
- Male dogs in your home show intense interest.
- Male dogs may stop eating, whine and pace.
Keep in mind: Some dogs show almost no bleeding, especially small dogs who clean themselves meticulously. If your dog seems different and is licking a lot, check her vulva for swelling.
When Do Dogs Go Into Heat for the First Time?
Typical age: Many dogs have their first heat between about 6 and 12 months of age.
Small breeds: Often earlier, sometimes around 4 to 6 months.
Large and giant breeds: Often later, sometimes 12 to 24 months.
What to expect from the first heat: Many first heats are irregular. Bleeding may be light, short or confusing. Cycles may take time to settle into a pattern.
Don’t assume she’s too young to get pregnant. Once she has her first heat, she can become pregnant.
Talk to your vet early. Ask about spay timing and the best approach for your dog’s breed, size and health.
How Often Do Dogs Go Into Heat?
Average: About every six months, or twice a year.
Variations: Some dogs cycle every four to five months, and some only once a year. Giant breeds may cycle less often, and certain breeds, such as Basenjis, often cycle once a year.
Irregular cycles: Early cycles may be irregular. If your dog’s cycle suddenly changes or she’s missing heats, talk to your vet.
Dogs age, but cycles don’t stop. Unspayed female dogs can keep going into heat throughout life, though cycles may become less regular. They can also develop health risks as they age, which is one reason vets talk about spaying.
Tracking helps. Mark the calendar each time your dog starts bleeding. You’ll be able to predict the next cycle and plan travel, boarding and events.
How to Track Your Dog’s Heat Cycle
A simple log helps you plan.
What to record:
| Date | What you noticed | Notes |
| Day 1 | First swelling or bleeding | Start of proestrus |
| Day 3 | Bleeding heavier | Diapers needed |
| Day 9 | Discharge lighter, flagging | Likely estrus, extra caution |
| Day 16 | Swelling reduced | Heat ending |
| Day 21 | No discharge | Diestrus begins |
Tips:
- Use a paper calendar or a phone app.
- Take notes on bleeding, behavior and appetite.
- Bring the log to your vet.
- Mark the likely next heat date about six months out.
- Plan boarding, grooming and travel around heat, since many facilities don’t accept dogs in season.
How to Care for a Dog in Heat
Most dogs sail through heat with a little extra care. These tips help you keep her comfortable and clean.
Keep Her Calm and Comfortable
- Offer extra attention, quiet time and gentle play.
- Keep to normal feeding and walking routines.
- Provide a comfortable, quiet bed. A supportive bed can help restless dogs relax. Our guide to dog beds for large dogs covers good options.
- Don’t scold her for licking, restlessness or marking. It’s hormonal.
- Offer chews and enrichment toys to channel restless energy. [INTERNAL LINK: add your dog chews guide here]
- Give her a safe, quiet space away from visitors.
- Be patient. Her mood usually settles when the heat ends.
Keep Her Clean
- Wipe her gently with a soft, damp cloth or pet-safe wipes as needed. Avoid scented human products.
- Don’t over-wash. Frequent baths can dry the skin.
- If you bathe her, use a mild dog shampoo, and rinse well.
- Dry thoroughly, especially in skin folds.
- Wash bedding often.
- Trim long hair around the vulva, if your vet or groomer advises, to keep things clean.
- Keep the area dry to prevent irritation.
Keep Her Safe
- Walk her on a leash only.
- Avoid dog parks, off-leash areas, boarding and daycare.
- Make sure fences are secure. Dogs in heat can be motivated escape artists.
- Never leave her alone in the yard.
- Keep her microchip information and ID current.
- Be aware of neighborhood males.
- Supervise outdoor time closely.
Watch Her Health
- Check discharge color, odor and amount.
- Monitor appetite, thirst, energy and temperature.
- Call your vet if something seems wrong.
Hygiene and Mess: What’s Normal
Amount of bleeding: Varies from barely noticeable to enough to stain furniture. Many small dogs lick away most of it.
Color: Bright red early on, then pink or straw colored later.
Odor: A mild smell is normal. Strong, foul odor isn’t.
Duration: Discharge can continue throughout proestrus and into estrus.
What isn’t normal: A very heavy flow that soaks through diapers quickly, foul-smelling pus, discharge after the heat has ended or discharge in a spayed dog. Call your vet.
Dog Diapers for Dogs in Heat
Diapers, sometimes called heat pants or britches, are the most popular way to manage mess. They sit over the hips with a hole for the tail, and hold a pad or absorbent lining.
Types of Dog Diapers
Disposable diapers. Single-use diapers, usually with adhesive tabs.
Best for: Short-term use, travel, owners who prefer convenience.
Watch out for: Cost adds up, and waste. Some dogs chew them.
Washable cloth diapers. Reusable diapers, often with Velcro or snap closures and a washable liner.
Best for: Long-term use, budget-minded owners, eco-minded owners.
Watch out for: Need laundering. Buy several, so one is always clean.
Diaper covers or britches. A washable cover that holds a disposable pad or a sanitary pad.
Best for: Dogs who need adjustable coverage, owners who like to customize.
Watch out for: Pad placement needs care.
Heat panties or underwear style. Stretchy, fitted garments like underwear.
Best for: Light bleeding, small dogs.
Watch out for: Fit matters, and they may not hold heavy flow.
Disposable liners and pads. Used with washable covers.
Best for: Heavy bleeding, easy cleanup.
Watch out for: Compatibility with the cover.
Belly bands. For male dogs, not for females in heat.
How to Choose a Dog Diaper
Size. Measure your dog’s waist, just in front of the back legs, and check the brand’s size chart. A snug fit prevents leaks, but too tight causes chafing.
Tail hole. Make sure the hole fits your dog’s tail comfortably. Docked tails and curly tails need different sizes.
Absorbency. Light bleeding needs less. Heavy bleeding needs thicker liners.
Material. Soft, breathable fabric is gentler on skin.
Closures. Velcro, snaps or elastic should hold without digging in.
Waterproof outer layer. Helps contain leaks.
Leg openings. Should be snug but not tight.
Ease of washing. Machine washable and quick drying is best for cloth diapers.
Quantity. Buy at least three to five washable diapers for a heat cycle.
Price. Disposable diapers cost more over time. Washable options cost more upfront but less overall.
How to Measure Your Dog for a Diaper
- Use a soft tape measure.
- Measure around your dog’s waist, in front of the back legs, where the diaper will sit.
- Measure the tail base if the brand lists it.
- Check the weight and size chart.
- If you’re between sizes, think about your dog’s shape and the closure’s adjustability.
How to Put On a Dog Diaper
- Prepare. Have the diaper, a pad if needed, wipes and treats ready.
- Clean the area. Wipe gently, and dry.
- Position the diaper. Slide the tail through the hole, and pull the diaper up to the hips.
- Fasten. Secure the closures snugly. You should be able to slide a finger under the waist.
- Check fit. Make sure the leg openings aren’t too tight, and the tail hole isn’t pinching.
- Reward. Give treats and praise.
- Watch for chewing. Distract with a toy if your dog tries to remove it.
How Often to Change It
- Change diapers every few hours when possible, and whenever they’re wet or soiled.
- Check at least every two to four hours during the day.
- Give her skin breaks, with diaper-free time in a safe, easy-to-clean space.
- Wash and dry the area gently at each change.
- Never leave a soiled diaper on overnight if you can avoid it.
Skin Care Under a Diaper
- Keep the skin clean and dry.
- Watch for redness, rubbing, sores or rash.
- Skip scented wipes and powders.
- Use a dog-safe barrier balm only if your vet approves.
- Choose breathable fabric.
- Remove the diaper for a while each day.
- Call your vet if irritation continues.
Getting Your Dog to Accept a Diaper
- Let her sniff the diaper, and give treats.
- Put it on for a few minutes, with treats and praise.
- Increase the time gradually.
- Distract with play or walks.
- Keep sessions positive.
- Make sure it fits well. A bad fit makes dogs fussy.
- If she keeps chewing it, supervise closely, try a different style or ask your vet.
How to Wash Washable Diapers
- Rinse off soil first.
- Wash in warm water with a mild, unscented detergent.
- Skip fabric softener, which can reduce absorbency.
- Close Velcro before washing.
- Dry on low heat or air dry.
- Check for wear and elastic damage.
- Replace worn diapers.
Do Diapers Prevent Pregnancy?
No. Diapers are for hygiene. They are not birth control. Dogs can get pregnant even if she’s wearing one, because males can be very persistent, and diapers can slip or be removed. Keep her away from intact males at all times during her heat.
Protecting Your Home
Use washable covers. Throw blankets, waterproof covers and old towels protect furniture and beds.
Choose a waterproof bed cover. Some dog beds have removable, washable covers.
Restrict access. Keep her in rooms with easy-to-clean floors, and use baby gates.
Use waterproof pads. Washable or disposable pads under her bed or crate can help.
Choose enzymatic cleaners. For blood and urine stains, enzymatic pet cleaners work better than regular cleaners. Rinse stains with cold water first, because hot water can set blood.
Wash bedding often. Daily or every other day.
Use paper towels or wipes for spot cleaning.
Keep the car protected. Use a waterproof seat cover for car rides. [INTERNAL LINK: add your dog car seat covers guide here]
Have towels ready. For accidents on the couch.
Don’t punish. Dogs can’t control discharge.
Top Supplies for a Dog in Heat
Prices are approximate and change often. Check the current listing, size chart and materials before you buy. I’ve grouped these by use rather than ranking them, because the best choice depends on your dog’s size and how heavy her flow is. Product lines change, so confirm details on the listing.
Best Washable Diaper: Pet Parents Premium Washable Dog Diapers
A popular reusable diaper that comes in packs with several sizes and designs. It uses a cotton-style liner and adjustable fasteners.
Good for: Owners who want to wash and reuse, longer heat cycles, small to medium dogs.
Pros: Reusable, adjustable, available in packs.
Cons: Needs washing. Check sizing carefully, and watch for leaks with heavy flow.
Best Budget Washable Option: Wegreeco Washable Dog Diapers
An affordable washable diaper sold in multipacks, with a soft liner and adjustable closures. It’s a common first choice.
Good for: Budget buyers, first-time owners.
Pros: Low price, multipack.
Cons: Quality varies. Check reviews on fit and leaks.
Best Disposable Option: Paw Inspired Disposable Dog Diapers
A widely sold disposable diaper with a tail hole, adhesive tabs and a range of sizes.
Good for: Short-term use, travel, owners who dislike laundry.
Pros: Convenient, easy cleanup, many sizes.
Cons: Costs more over time. Creates waste. Check sizing, since fit varies.
Best Disposable With Added Features: Simple Solution Disposable Dog Diapers
A disposable diaper with stretchy fasteners and absorbent padding, sold for female dogs in heat and for incontinence.
Good for: Short cycles, travel, backup.
Pros: Easy to find, convenient.
Cons: Check size, absorbency and tab strength.
Best Waterproof Bedding Protection: Waterproof Pet Blanket or Furniture Cover
Waterproof blankets and covers protect couches, beds and car seats. Choose machine-washable ones in a size that fits your furniture.
Good for: Homes with furniture dogs, long heat cycles.
Pros: Reusable, easy to wash, protects furniture.
Cons: Some are noisy or slippery. Check reviews.
Best Stain and Odor Cleaner: Nature’s Miracle Stain and Odor Remover
A widely used enzymatic cleaner designed for pet stains and odors. Enzymes help break down organic messes.
Good for: Cleaning blood, urine and accidents on carpets, bedding and floors.
Pros: Effective for many owners, easy to find.
Cons: Test on a small area first. Follow the directions, and keep away from pets while it dries.
Best Wipes: Pet-Safe Grooming Wipes
Fragrance-free wipes for gentle cleaning. Choose products made for dogs, since human wipes can irritate.
Good for: Quick cleanups, travel.
Pros: Convenient.
Cons: Costs add up. Check ingredients.
Best Backup: Sanitary Pads for Diaper Covers
Disposable, absorbent pads designed to fit in washable diaper covers. They make cleanup quicker.
Good for: Heavy bleeding, owners who like washable covers.
Pros: Easy changes, less laundry.
Cons: Must fit your cover. Check sizing.
A Note on Brands
Dog heat products are sold under many names. Read recent reviews from owners with a dog of a similar size, and look for comments about leaks, closures, skin irritation and sizing. A product that fits properly beats a famous label.
Walking a Dog in Heat Safely
Many owners wonder whether to walk their dog during heat. The answer is yes, with care.
Why keep walking? Exercise helps with restlessness, mood and weight. Dogs also need to go to the bathroom.
How to walk safely:
- Use a leash and a secure harness. A dog in heat is more likely to bolt. Our dog harness guide covers escape-resistant options.
- Choose quiet times and routes. Early morning and late evening usually mean fewer dogs.
- Avoid dog parks, trails with off-leash dogs and busy sidewalks. Intact males can approach from a distance.
- Keep walks shorter and closer to home. If a male approaches, you can retreat quickly.
- Carry a leash and treats. Treats help you redirect your dog.
- Stay alert. Watch for loose dogs.
- Don’t leave her unsupervised outdoors, even briefly.
- Consider driving to a quiet area. A short drive to an empty field can reduce risk.
- Clean up promptly. Blood can attract males to your yard.
- Consider a diaper. It can reduce scent trails, though it isn’t a barrier. [INTERNAL LINK: add your hands-free dog leash guide here]
What if an intact male approaches? Shorten the leash, put yourself between the dogs, and move away calmly. If needed, pick up a small dog. Don’t shout or panic.
Skip:
- Daycare, boarding, grooming salons and training classes that don’t allow dogs in heat
- Dog parks
- Off-leash hikes
- Beach or park meetups
Preventing Unwanted Pregnancy
An unplanned litter is stressful, expensive and risky for the dog and the puppies.
Facts to remember:
- A dog can get pregnant during the fertile period, which is often in the middle of the heat.
- She can mate with multiple males during a single heat.
- Males can detect a dog in heat from a long distance.
- Diapers and sprays don’t prevent pregnancy.
- Dogs can “tie” during mating, which makes separating them dangerous.
Practical steps:
- Supervise every moment she’s outdoors.
- Keep her on a leash.
- Secure your fence, gates and doors. Check for gaps and digging spots.
- Keep her indoors when you can’t supervise.
- Keep her away from intact males, including those in the house.
- Consider boarding at a facility that accepts dogs in heat, or asking a trusted friend to look after her.
- Talk to your vet about spaying or about emergency options if mating happens.
- Don’t use home remedies or human medications. They can be dangerous.
If she mates by accident: Call your vet right away. In some cases, vets can discuss options, depending on timing and your dog’s health. Don’t wait.
Living With a Male Dog While Your Female Is in Heat
If you have an intact male in the house, heat can be a challenge. Even neutered males may be interested and may show unusual behavior.
Challenges:
- Males may whine, pace, refuse food and try to reach her.
- Males may become more aggressive toward each other.
- They can mate quickly if left unsupervised.
What helps:
- Separate them completely. Use closed doors, not just baby gates, and consider separate floors.
- Use crates or pens. Keep them out of sight and smell if possible.
- Rotate time with each dog. Give each dog exercise and attention separately.
- Use dividers inside the home. Make sure barriers are tall and secure.
- Keep the male occupied. Provide chews, puzzle toys and walks away from the female’s scent. [INTERNAL LINK: add your lick mat guide here]
- Clean thoroughly. Wash bedding and clean spots with enzymatic cleaner to reduce scent.
- Consider boarding one dog elsewhere. For a few weeks, a friend’s house or a facility that accepts dogs in heat might be easier.
- Ask your vet about neutering. It’s a long-term plan, not an instant fix for the current heat.
Don’t rely on trust. Even well-behaved dogs can act on instinct.
Behavior Changes During Heat
Hormones affect mood and behavior.
Common changes:
- Restlessness and pacing
- Extra clinginess, or irritability
- More barking, whining or howling
- Marking and more frequent urination
- Mounting, humping or flirty behavior
- Reduced focus and training response
- Escape attempts
- Appetite changes
- Mild aggression toward other dogs, especially other females
- Nesting and guarding toys
What helps:
- Keep a regular routine.
- Offer extra exercise on leash, and mental stimulation.
- Use puzzle toys and chews.
- Give calm attention.
- Use positive training. Short clicker sessions can help her focus. [INTERNAL LINK: add your clicker training guide here]
- Avoid punishment.
- Give her a quiet place to retreat.
- Ask your vet if behavior seems extreme.
Female-to-female tension. Dogs in heat can be touchy with other female dogs, and fights can happen. Separate them if needed.
Spaying: What to Know
Spaying, medically called ovariohysterectomy or ovariectomy, is surgery to remove the ovaries and usually the uterus. It ends heat cycles and prevents pregnancy.
Why Many Owners and Vets Recommend Spaying
- No heat cycles. No mess, bleeding or male attention.
- No unplanned litters.
- Reduces the risk of certain conditions. These include pyometra, a life-threatening uterine infection, and in many cases reduces the risk of mammary tumors, especially when done earlier. The details depend on timing.
- Fewer behavior challenges tied to heat.
- Population control. Many dogs end up in shelters.
Things to Discuss With Your Vet
Spay timing is a topic where recommendations have changed over time and differ by breed, size, health and lifestyle. Considerations include:
- Age and size. Some large breeds may benefit from waiting until they’re more physically mature, while small breeds may be spayed earlier. Your vet can advise.
- Joint and orthopedic health. Research has examined links between the timing of spay and neuter surgery and certain joint problems and cancers in some breeds. Evidence varies.
- Timing relative to heat. Some vets prefer to spay between heats. Others spay at different times. Ask about your dog.
- Your goals. Pet only, breeding, show or working dog.
- Cost. Prices vary by region and clinic. Many areas have low-cost clinics.
- Recovery. Most dogs recover within about two weeks, with restricted activity and wound care.
- Alternatives. Some vets discuss ovary-sparing procedures. Ask about options.
What Spaying Doesn’t Do
- It doesn’t change personality in a major way.
- It doesn’t automatically cause weight gain, though metabolism can change. Manage food and exercise.
- It doesn’t guarantee that behavior problems vanish.
Planning for Recovery
- Use a cone or recovery suit to stop licking.
- Restrict activity.
- Provide a quiet, comfortable place to rest.
- Follow your vet’s pain management plan.
- Check the incision daily.
- Call your vet if you see redness, swelling, discharge or if your dog seems unwell.
False Pregnancy (Pseudopregnancy)
Some dogs show pregnancy-like signs a month or two after heat, even though they aren’t pregnant. This happens because of hormone changes in diestrus.
Signs:
- Nesting behavior
- Mothering toys or objects
- Swollen mammary glands, sometimes with milk
- Restlessness, mood changes or depression
- Reduced appetite
- Occasional vomiting
What to do:
- Make her comfortable, and keep her calm.
- Remove toys she mothers, if it upsets her.
- Avoid stimulating the mammary glands.
- Increase exercise and distraction.
- Call your vet if signs are strong, last longer than a few weeks or she seems unwell.
False pregnancy can recur with each heat. Spaying prevents it.
Health Red Flags: When to Call the Vet
Call your vet promptly if you notice any of the following.
During heat:
- Very heavy bleeding that soaks through diapers fast
- Bleeding that continues for much longer than a month
- Foul-smelling or pus-like discharge
- Fever, lethargy or weakness
- Vomiting or loss of appetite
- Excessive thirst and urination
- Pain, a swollen abdomen or restlessness that seems like distress
After heat (diestrus):
- Discharge that appears weeks after heat, especially if it’s creamy, bloody or foul smelling
- Increased thirst, vomiting, lethargy, a swollen belly or fever
These can be signs of pyometra, a serious uterine infection that can become life threatening. It needs emergency care.
Other concerns:
- Heat that lasts much longer than usual
- No heat by around 18 to 24 months of age
- Heat cycles that become very irregular
- Lumps in the mammary glands
- Signs of pregnancy complications if she was mated
Don’t wait. If you aren’t sure, call your vet, or an emergency clinic outside business hours.
Myths About Dogs in Heat
“Dogs have periods like humans.” Not exactly. Bleeding occurs in the early stage, before the fertile period.
“She can’t get pregnant while she’s bleeding.” She might. Timing varies, so keep her away from males throughout.
“A diaper prevents pregnancy.” It doesn’t.
“She should have one litter first.” There’s no health benefit to letting a dog have a litter before spaying.
“Heat makes dogs sick.” Heat itself isn’t a disease, though complications can happen.
“Bathing during heat is harmful.” Gentle bathing is fine.
“Dogs in heat can’t go outside.” They can, with supervision and a leash.
“A first heat doesn’t count.” It does. She can get pregnant at her first heat.
“A dog in heat should be isolated for her whole cycle in a dark room.” She needs attention and comfort, not isolation.
“Spaying changes a dog’s personality completely.” Most dogs stay the same.
Mistakes to Avoid
Underestimating the risk. Males can be very determined.
Taking her to the dog park. It’s a recipe for unwanted pregnancy.
Leaving her unsupervised in the yard. Even a few minutes is enough.
Relying on diapers for protection. They can slip or be pulled off.
Using human products. Many are unsafe for dogs.
Skipping vet advice. Questions about spaying, health and timing are best answered by your vet.
Not changing diapers. Skin irritation and infection can develop.
Using harsh cleaners. They can irritate skin and noses.
Punishing behavior. Hormones are driving it.
Ignoring warning signs. Foul discharge, lethargy and increased thirst need attention.
Not tracking cycles. You’ll be surprised by the next heat.
Forgetting boarding rules. Many facilities refuse dogs in heat.
Not securing the home. Dogs in heat can find escape routes.
How Much Does Managing a Dog in Heat Cost?
Washable diapers (roughly $15 to $40 for a multipack): Reusable and cheaper over time.
Disposable diapers (roughly $10 to $25 per pack): Convenient, but adds up over a cycle.
Waterproof covers and pads (roughly $15 to $50): Protect furniture and beds.
Enzymatic cleaner (roughly $10 to $20): Useful for stains and odor.
Wipes and grooming supplies (roughly $5 to $15): Convenience items.
Boarding or sitter costs: Vary widely. Ask if the facility accepts dogs in heat.
Spay surgery (roughly $100 to $500 or more, depending on region, clinic and dog size): Low-cost clinics and shelters may offer discounts. Complications or larger dogs cost more.
Emergency costs: Pyometra surgery and other emergency care can cost several thousand dollars.
Think long term. A few weeks of supplies twice a year add up over the years, which is one factor owners weigh when deciding about spaying.
Final Thoughts: Stay Calm, Stay Careful
A dog in heat isn’t a crisis. It’s a few weeks of extra care, some laundry and a lot of supervision. Know the signs and the stages. Keep your dog on a leash, away from intact males. Use diapers and washable covers to manage the mess, but remember they aren’t birth control. Give her extra comfort and routine, and watch her health closely.
If you’re thinking about spaying, talk to your vet about timing and options for your dog’s breed, size and lifestyle. If anything seems off, such as foul discharge, lethargy, extreme thirst or heavy bleeding, call your vet right away.
With a little preparation, you and your dog can get through heat with fewer worries, a cleaner house and a lot of patience.
Browse more helpful guides in our Dog Care section.
Heat Cycle Patterns by Size and Breed
Cycle timing varies a lot between dogs, but size gives some clues. These are general patterns, not rules.
| Dog size | Typical first heat | Typical cycle frequency | Notes |
| Toy and small (under 20 pounds) | About 4 to 8 months | Often every 5 to 7 months | May bleed lightly and clean themselves |
| Medium (20 to 50 pounds) | About 6 to 12 months | About every 6 months | Fairly typical pattern |
| Large (50 to 90 pounds) | About 9 to 18 months | About every 6 to 9 months | Can be more irregular at first |
| Giant (over 90 pounds) | About 12 to 24 months | About every 8 to 12 months | Later start, longer gaps |
Breed quirks:
- Basenjis and some primitive breeds often cycle only once a year.
- Some giant breeds cycle less often than every six months.
- Some small breeds cycle more often than twice a year.
- Dogs sometimes have “split heats,” where bleeding stops and restarts. Talk to your vet if you’re unsure what’s happening.
- Silent heats happen, where signs are so mild that owners miss them.
What this means for you: Keep your own records, and expect your dog’s pattern to settle after a few cycles.
Planning Ahead for Heat
A little planning makes heat easier.
Before heat starts:
- Stock up on diapers, pads, wipes and enzymatic cleaner.
- Wash dog beds and blankets, and have waterproof covers ready.
- Check your fence, gates and doors for weak spots.
- Update your dog’s microchip information and ID tags.
- Plan walking routes with fewer dogs.
- Arrange sitters or boarding that accept dogs in heat, or plan time at home.
- Talk to your vet about spay timing if you haven’t already.
When heat starts:
- Note the date on your calendar.
- Start diapers if you want them.
- Increase supervision.
- Notify neighbors with intact males if appropriate, so they can keep their dogs secure.
- Postpone travel, shows, training classes and daycare.
- Keep a closer eye on your male dogs.
During heat:
- Check discharge and behavior daily.
- Keep up exercise, with a leash.
- Wash bedding and covers.
- Keep notes for your vet.
After heat:
- Watch for signs of illness in the weeks after heat, including pyometra signs.
- Watch for false pregnancy.
- Mark the likely date of the next heat.
- Review whether spaying is right for your dog.
Dog in Heat Emergency Kit
Keep these items together in a small bin, so you can find them quickly.
- [ ] Washable diapers, at least three to five
- [ ] Disposable diapers or pads for backup
- [ ] Pet-safe wipes
- [ ] Enzymatic cleaner
- [ ] Waterproof blanket or furniture cover
- [ ] Extra towels
- [ ] Spare leash and secure harness
- [ ] Treats for training and distraction
- [ ] Chews and puzzle toys
- [ ] A notebook or calendar for tracking
- [ ] Your vet’s phone number and the after-hours emergency clinic’s number
- [ ] Your dog’s vaccination and medical records
- [ ] A recent photo of your dog, in case she gets loose
- [ ] A mild dog shampoo
- [ ] A cone or recovery suit, if your vet recommends one for licking
A Sample Daily Routine for a Dog in Heat
Routines help dogs feel calm. Adapt this example to your dog.
| Time | Activity |
| Early morning | Leashed potty trip, quick wipe-down, diaper change |
| Breakfast | Regular meal, with a puzzle toy if she’s restless |
| Mid-morning | Short training session indoors, with treats |
| Midday | Rest in a quiet spot, diaper check |
| Afternoon | Leashed walk on a quiet route, then wipe-down |
| Evening | Dinner, calm play, enrichment toy |
| Before bed | Last potty trip on leash, fresh diaper |
| Overnight | Crate or bed in a closed room, away from males |
Tips:
- Keep outings short and purposeful.
- Add mental games to burn energy indoors.
- Be consistent with feeding and walking times.
- Give plenty of calm attention.
Is It Really Heat? Other Causes of Bloody Discharge
Not every case of blood from the vulva is heat. Consider other possibilities, and contact your vet if something doesn’t fit.
Urinary tract infection. Bloody urine, frequent urination, straining and licking. Often confused with heat.
Vaginitis. Inflammation of the vagina, which can cause discharge and licking, especially in young, unspayed dogs.
Injury or trauma. A cut, bite or object that caused bleeding.
Tumors or growths. More common in older dogs.
Pyometra. A uterine infection with discharge, often after heat.
Retained ovarian tissue after spay (ovarian remnant syndrome). Rarely, a spayed dog shows signs of heat because some ovarian tissue remains. This needs a vet.
Clotting problems or toxins. Some poisons can cause bleeding, and dogs may show other symptoms.
Hormonal imbalances. Some conditions affect cycles.
Male dog confusion. If you have a male dog with blood from the penis, it’s not heat, and needs a vet.
What to do:
- If your spayed dog has bloody discharge, call your vet.
- If your unspayed dog is bleeding outside the expected pattern, such as at a very young age, after the heat has ended or with other symptoms, call your vet.
- If you see blood in urine or stool, call your vet.
Questions to Ask Your Vet About Heat
Bring a list to your appointment. These questions are a good start.
- What are the best timing and options for spaying my dog, given her breed and size?
- What should I expect for her first heat?
- How can I tell when she’s fertile?
- How long should I keep her away from males?
- What signs mean I should call you right away?
- What are the risks of pyometra, and how do I watch for it?
- If she mates by accident, what are the options and the time window?
- Are diapers safe for her skin, and how long can she wear them?
- Should I change her diet or exercise during heat?
- Is there anything I should do about false pregnancy?
- What does recovery from spaying involve?
- What are the pros and cons of waiting versus spaying sooner?
- How should I handle her heat if I have male dogs at home?
- Which parasite prevention and vaccinations should I keep current?
Tips for Coping With the Emotional Side
Heat can wear on owners, too.
It’s temporary. A few weeks of extra care will pass.
You’re not alone. Many owners find the first heat stressful.
Ask for help. Friends and family can walk her, hold the leash or board a male dog.
Take care of your own routine. Heat shouldn’t take over your life. Short walks, a clean house and a little patience help.
Don’t be hard on yourself. If you slip up, call your vet, and make a plan.
Celebrate small wins. A clean day, a calm walk and a good night’s sleep count.
Talk to your vet. If heat seems overwhelming, ask about long-term plans.
Dog Heat Glossary
Anestrus: The resting stage between cycles.
Diestrus: The stage after heat, lasting about two to three months, when hormones remain high.
Estrus: The fertile stage of heat, when she’s receptive to males.
Flagging: Lifting or moving the tail to the side to invite mating.
False pregnancy (pseudopregnancy): Pregnancy-like signs without pregnancy.
In season: Another term for being in heat.
Proestrus: The early stage of heat, with swelling and bloody discharge.
Pyometra: A serious uterine infection.
Silent heat: A heat cycle with very mild or unnoticed signs.
Spay: Surgery that removes the ovaries and usually the uterus.
Split heat: A heat cycle that seems to stop and then restart.
Tie: The state in which male and female dogs remain locked together after mating.
Vulva: The external part of the female reproductive tract.
Heat Through Your Dog’s Life
Heat looks different at different ages.
Young dogs. First heats can be short, light and irregular. Dogs may be confused by their own bodies and act clingy or moody. Keep routines steady.
Prime adult years. Cycles are usually more predictable, and owners often settle into a pattern. This is also when many owners decide whether to spay or plan a breeding with a vet’s guidance.
Older dogs. Unspayed dogs don’t go through menopause the way people do. They can keep cycling into older age, though cycles may become irregular. The risk of pyometra and mammary tumors rises with age and with repeated heat cycles. Any new discharge, lump or change in thirst deserves a vet visit.
Dogs with health conditions. Some conditions, such as hormonal diseases or immune problems, can change cycles or make surgery riskier. Your vet can help balance risks.
Thinking About Breeding: A Short, Honest Note
This guide isn’t a breeding manual, but if you’ve been thinking about breeding your dog, consider these points first.
Breeding is a serious commitment. It involves health testing, careful timing, pregnancy care, delivery, caring for puppies for weeks and finding good homes.
Health testing matters. Responsible breeders screen for breed-specific genetic conditions before mating.
Costs add up. Vet care, testing, emergencies such as a C-section, food, vaccines and supplies can cost thousands of dollars.
Risks exist. Pregnancy and delivery carry risks for the mother and puppies.
Shelters are full. Many wonderful dogs need homes. Think carefully about adding to the numbers.
Timing is complex. Heat timing, ovulation and mating need veterinary guidance.
Talk to your vet first. If you’re considering breeding, ask your vet about whether it’s appropriate for your dog, and about reputable breeding organizations for your breed.
If your dog was bred by accident, call your vet right away.
Heat and Spay and Neuter Programs
If cost is a concern, you have options.
Low-cost spay and neuter clinics. Many cities and states have clinics that offer reduced fees.
Shelter and rescue programs. Many shelters offer vouchers or discount programs.
Veterinary schools. Some veterinary schools offer lower-cost services performed under supervision.
Humane societies and nonprofits. Local groups often run community programs.
Payment plans and pet insurance. Some clinics offer payment plans. Pet insurance may help, depending on your policy, though routine procedures aren’t always covered.
Ask your vet. Your vet may know about local resources.
Search for programs in your area, and ask about eligibility. Don’t delay care for your dog because of cost without asking about options.
Explaining Heat to Children
Kids often notice blood and changes in behavior. A simple, calm explanation helps.
What to say: “Our dog is going through a normal stage where her body is getting ready to have puppies someday. She may bleed a little and act different. She needs a bit of extra care, and we need to keep her safe.”
What to teach:
- Don’t tease or chase the dog.
- Leave the dog alone if she wants space.
- Wash hands after touching diapers, bedding or cleaning supplies.
- Don’t let her out in the yard alone.
- Keep gates and doors closed.
- Tell an adult if the dog seems sick or loose.
Give kids a job. Older kids can help with walks on a leash, laundry and tracking the calendar, with supervision.
Travel and Vacations During Heat
Heat can complicate plans.
Road trips. Bring diapers, wipes, extra bedding, waterproof seat covers and a leash. Keep her secured in the car. [INTERNAL LINK: add your dog car seat guide here]
Hotels and rentals. Check pet policies. Some places charge cleaning fees or may refuse pets in heat. Bring waterproof covers.
Visiting friends. Ask in advance, especially if they have intact males.
Boarding. Many boarding kennels don’t accept dogs in heat. Ask if they have a separate area.
Dog shows and events. Many events don’t allow dogs in heat.
Flights. Check airline rules and your dog’s comfort. Ask your vet about travel timing.
If you can delay. Postponing travel until the heat ends often makes life easier.
A Practical Laundry and Odor Routine
Heat means extra laundry. A simple system keeps things manageable.
Daily:
- Rinse soiled diapers, then put them in a bucket or a wash bag.
- Shake out beds and covers outdoors.
- Spot-clean accidents with enzymatic cleaner.
Every other day:
- Wash dog beds and blankets in warm water with unscented detergent.
- Wipe down crates and hard floors.
Weekly:
- Wash all diapers in a hot, gentle cycle.
- Vacuum dog areas.
- Wash the waterproof furniture covers.
Odor control tips:
- Good ventilation helps.
- Use enzymatic cleaners rather than perfumes.
- Dry laundry fully to prevent mildew.
- Avoid strong air fresheners and essential oil diffusers, since some can irritate or harm pets.
- Keep a lidded bin for soiled disposable diapers.
Stain removal reminder: Use cold water first. Hot water sets blood stains.
A Week-by-Week Look at a Typical Heat
Every dog is different, but this timeline gives a rough idea of what many owners see.
Week 1. The vulva starts to swell, and you may see spots of blood or a light pink discharge. She may lick herself more and urinate more often. Males begin to notice. She usually isn’t ready to mate yet, but keep her supervised from day one. Start your calendar, and set out diapers if you plan to use them.
Week 2. Discharge may be at its heaviest, or it may begin to lighten. She might become more restless, flirty or irritable. Males will be highly interested. This is when many dogs enter the fertile stage, so be especially careful on walks and in the yard.
Week 3. Discharge often lightens to pink or straw colored, and swelling begins to ease for many dogs. She may still be receptive to males. Don’t relax your guard yet.
Week 4. Swelling and discharge are usually fading, and she’s returning to her normal self. Males lose interest. Keep supervising for a few more days, to be safe.
Weeks 5 to 12. She’s in diestrus, and hormones are still high. Some dogs show false pregnancy signs. Watch for any foul-smelling discharge, lethargy, vomiting or increased thirst, and call your vet right away if you see them.
After that. She enters the resting stage until the next heat, in about four to six months or more.
Diet and Exercise During Heat
Diet. Keep feeding your dog’s regular, balanced food at normal portions unless your vet advises otherwise. Appetite can go up or down during heat. Don’t make big diet changes. Offer fresh water at all times, and watch for excessive thirst, which can signal a problem.
Exercise. Keep up with regular exercise on a leash. It helps with restlessness and weight. Shorter, more frequent walks can feel safer. Add indoor games, such as hide and seek, scent games or short training sessions, to use energy without extra risk.
Weight. Dogs can gain or lose weight around heat. Weigh her occasionally, and ask your vet if you notice big changes.
Treats. Keep treats to about ten percent of her daily calories, as veterinarians commonly advise.
Quick Do and Don’t Lists
Do:
- Keep her on a leash outdoors.
- Supervise her at all times.
- Use diapers and washable covers to control mess.
- Clean gently, and wash bedding often.
- Keep a calendar of her cycles.
- Provide comfort, exercise and enrichment.
- Call your vet if anything seems wrong.
- Talk to your vet about spaying.
Don’t:
- Take her to dog parks or off-leash areas.
- Leave her alone in the yard.
- Rely on diapers to prevent pregnancy.
- Use human products, medications or scented cleaners on her.
- Punish her for hormonal behavior.
- Assume a first heat is “safe.”
- Ignore foul discharge, lethargy, vomiting or excessive thirst.
- Let her near intact males without supervision.
Details Owners Often Overlook
Scent trails. Dogs in heat leave scent in the yard and on walks. Males can pick it up from surprisingly far away. Rinsing urine spots and cleaning outdoor areas can help reduce attraction, though it won’t remove it entirely.
Windows and doors. Dogs in heat can sprint out of an open door. Keep entry points closed, and consider baby gates at doors where visitors come and go.
Fenced yards. A fence that holds in your dog doesn’t always keep males out. Determined males can dig under or jump fences, so supervision matters.
Visitors. Tell guests that your dog is in heat, especially if they bring their own intact male dogs.
Vet visits. Let the clinic know that she’s in heat when you book, so they can plan for a safe waiting area.
Microchips. Make sure your contact details are current, in case she escapes.
Grooming. Some groomers won’t take dogs in heat. Ask before you book, or wait until the cycle ends.
Stress signals. Panting, pacing, a loss of appetite and hiding can show discomfort. Provide a quiet, comfortable place, and ask your vet if signs are strong.
Your own routine. Plan ahead for laundry, errands and time at home. A little structure takes the stress out of a few busy weeks.
Patience. Heat is a normal part of dog life. With care and supervision, most dogs and families get through it without any trouble.
Frequently Asked Questions (30 FAQs)
1. What does it mean when a dog is in heat?
A dog in heat is in the fertile part of her reproductive cycle, when her body prepares to mate and have puppies. You’ll usually see a swollen vulva, bloody discharge and behavior changes. She can become pregnant during this time.
2. How long does a dog stay in heat?
The visible heat, covering proestrus and estrus, usually lasts about two to four weeks. The full cycle, including the rest phases, is longer. Individual dogs vary.
3. How often do dogs go into heat?
Most unspayed female dogs go into heat about every six months, though some cycle every four to five months and some only once a year. Cycles can be irregular at first.
4. At what age do dogs go into heat for the first time?
Many dogs have a first heat between about 6 and 12 months. Small breeds often start earlier, and large and giant breeds may start at 12 to 24 months.
5. What are the signs a dog is in heat?
Common signs include a swollen vulva, bloody or pink discharge, frequent licking, more urination, restlessness, behavior changes, tail flagging and attention from male dogs. Some dogs show very subtle signs.
6. How much bleeding is normal for a dog in heat?
It varies. Some dogs have light spotting, and others bleed more heavily. Discharge may start red, then become pink or straw colored. Call your vet if bleeding is extremely heavy, foul smelling or lasts much longer than usual.
7. When can a dog get pregnant during heat?
Usually during the estrus stage, often in the middle of the heat, but timing varies. Because it’s hard to know exactly, keep her away from intact males throughout the cycle.
8. Can a dog get pregnant during her first heat?
Yes. A dog can become pregnant at her first heat, so keep her supervised.
9. Do dog diapers prevent pregnancy?
No. Diapers help with mess, but they’re not birth control. Dogs can get pregnant even if she’s wearing one.
10. What are the best diapers for dogs in heat?
Washable diapers are economical for long cycles, and disposable ones are convenient for short-term use. Choose the right size, a good tail hole, soft material and secure closures. Popular options include Pet Parents, Wegreeco and Paw Inspired.
11. How do I measure my dog for a diaper?
Measure around her waist, in front of the back legs, and check the brand’s size chart. Make sure the tail hole fits her tail. If she’s between sizes, think about the adjustability of the closures.
12. How often should I change my dog’s diaper?
Check and change it every few hours, and whenever it’s wet or soiled. Clean and dry the skin each time, and let her skin rest without a diaper when you can supervise.
13. Can I bathe my dog while she’s in heat?
Yes. Gentle bathing with a dog-safe shampoo is fine. Rinse well, and dry thoroughly. Avoid over-washing, which can dry out her skin.
14. Can I walk my dog while she’s in heat?
Yes, on a leash and away from intact male dogs. Avoid dog parks and off-leash areas. Keep walks shorter, choose quiet routes and stay alert.
15. Can my dog go to daycare, boarding or grooming during heat?
Many facilities don’t accept dogs in heat, so check ahead. Plan alternatives such as a trusted sitter or a facility that accepts females in season.
16. How do I keep male dogs away from my female in heat?
Keep her on a leash, and supervise her outside. Secure your yard, and keep her indoors when you can’t watch her. If you have a male in the house, separate them completely with closed doors, crates or different floors.
17. How do I live with a male dog and a female in heat?
Separate them with solid barriers, never rely on baby gates alone, rotate time and exercise, provide enrichment for the male and clean thoroughly to reduce scent. Consider boarding one dog elsewhere for a few weeks.
18. Why is my dog acting strange during heat?
Hormones can cause restlessness, clinginess, irritability, vocalizing, marking, mounting, appetite changes and escape attempts. Offer routine, exercise, enrichment and patience, and avoid punishment.
19. Why is my dog licking herself so much?
Licking is common during heat because of discharge and swelling. A little is normal. Constant, frantic licking, redness or a foul smell should be checked by your vet.
20. What should I do if my dog mated by accident?
Call your vet right away. Options may exist depending on timing and your dog’s health. Don’t wait or try home remedies.
21. What is a false pregnancy in dogs?
It’s when a dog shows pregnancy signs, such as nesting, mothering toys and swollen mammary glands, after a heat cycle, even though she isn’t pregnant. It’s caused by hormone changes and usually passes. Call your vet if signs are strong or last long.
22. What is pyometra?
It’s a serious uterine infection that can occur in unspayed female dogs, often weeks after heat. Signs include lethargy, vomiting, excessive thirst, fever, a swollen belly and vaginal discharge. It’s an emergency, so call your vet immediately.
23. When should I spay my dog?
It depends on your dog’s breed, size, health and your goals. Recommendations vary, and research continues. Ask your vet to help you choose the best timing for your dog.
24. Does spaying stop heat cycles?
Yes. Spaying removes the ovaries and usually the uterus, ending heat cycles and preventing pregnancy. It also prevents pyometra and false pregnancy.
25. Is it okay to spay a dog while she’s in heat?
Some vets prefer to wait until after the heat because of increased blood flow and surgical risk. Others operate during heat in some cases. Ask your vet what’s best for your dog.
26. Should my dog have one litter before spaying?
No. There’s no health benefit in letting a dog have a litter before spaying. Breeding carries risks and costs, and it should be a carefully planned decision with veterinary guidance.
27. How do I clean blood stains from furniture and carpet?
Blot with cold water first, since hot water can set blood. Then use an enzymatic pet cleaner, following the directions. Washable covers and waterproof blankets help prevent stains.
28. Can a dog in heat be around other female dogs?
Yes, but tension can happen. Dogs in heat can be irritable, and fights can occur, especially with other females. Supervise closely, and separate them if needed.
29. How can I tell if my dog’s heat is over?
Swelling goes down, discharge stops and male interest drops. She’ll stop flagging and return to her usual behavior. Keep her safe for a few extra days to be careful.
30. When should I call the vet about my dog’s heat?
Call for very heavy bleeding, foul-smelling discharge, fever, lethargy, vomiting, excessive thirst, a swollen belly, heat lasting much longer than usual, irregular cycles, no heat by about two years or any sign of pregnancy complications.
Disclaimer: This guide is for general information and isn’t veterinary advice. Every dog is different. If your dog has heavy or foul-smelling discharge, lethargy, vomiting, excessive thirst, a swollen belly or any sign of illness, or if she may have mated, please contact your veterinarian right away.
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