Cat in Heat: Signs, How Long It Lasts, and How Often It Happens
A cat in heat is a female cat in the fertile part of her cycle. The yowling and rolling repeat every few weeks until she is bred or spayed. Here are the signs, how long each heat lasts, what calms her, and why spaying is the only permanent fix.
BVMS MRCVS
Medically reviewed by Dr. Pippa Elliott, BVMS MRCVS · Last reviewed
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A cat in heat is an unspayed female cat in estrus, the receptive stage of her reproductive cycle when she will accept a male and can become pregnant. Each heat averages about seven days, and it returns every two to three weeks through the breeding season until she is bred or spayed.
When your cat is in heat, the change is hard to miss: loud calling, rolling, rubbing, and a raised rear. This guide covers what happens when a cat is in heat, how long it lasts, how often it comes back, what helps at home, and why spaying is the only permanent fix.
- 1Vets give the definition of heat as the estrus stage of the cycle, the window when a female cat accepts a male and can conceive.
- 2Owners usually spot the signs: vocalizing, rolling, raising the rear, extra affection, spraying.
- 3One heat averages about seven days, and an unspayed cat cycles every two to three weeks for most of the year.
- 4Kittens can reach sexual maturity from around four months, and the average first heat comes at about six months.
- 5Spaying is the only permanent way to stop heat cycles, and it also prevents pyometra, a life-threatening uterine infection.
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What Is a Cat in Heat?
A cat in heat is a female in estrus, the part of the reproductive cycle when she is receptive to mating. The Merck Veterinary Manual lists estrus in cats at 6 to 7 days within a cycle of 14 to 21 days.
In plain terms, heat is the few days each cycle when her hormones drive her to look for a mate. Your vet can confirm it if you are unsure.
Cats are seasonally polyestrous. VCA Animal Hospitals explains that this means they have multiple cycles during the breeding season, and Merck places that season from spring through early autumn. That is when female cats are in heat most often. Spaying is the only permanent fix that stops the cycle.
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- Cats are induced ovulators, which explains why cats go into heat again and again. VCA notes that the act of breeding stimulates the ovaries to release eggs.
- Most cats need three to four matings within 24 hours to ovulate, per VCA.
- Merck states that induced ovulation occurs 24 to 48 hours after breeding.
- Without mating, she does not ovulate, and the cycle repeats.
What happens when a female cat is in heat is mostly behavioral:
- The cat in heat position: also called the cat in heat pose, this is lordosis: front end low, rear raised, back legs treading.
- The female cat in heat noise: a loud, drawn-out yowl that owners often mistake for distress.
- Restless attention seeking: rubbing, rolling, and following you from room to room.
Signs a Cat Is in Heat
The clearest signs a cat is in heat are loud vocalizing, rolling on the floor, raising her rear when stroked, extra affection, and in some cats, urine spraying.
VCA describes how cats act when in heat: most become very affectionate, even demanding, roll on the floor more often, and become very vocal. To tell if your cat is in heat, look for vocalizing, rolling, raising her rear, extra affection, and spraying. Seeing several of these symptoms together in an unspayed female is the strongest clue.
Here is what female cats do in heat, and how you know your cat is in heat:
- Calling and meowing: a cat in heat meowing sounds louder and more urgent than her normal voice. International Cat Care describes this as a female who will "call" regularly during sexually active times of the year.
- Rolling and rubbing: she rolls on the floor and rubs against people, furniture, and doorways.
- Mating position or pose (lordosis): when stroked along the back, she raises her rear quarters and treads with her back legs, per VCA.
- Extra affection: female cat in heat behavior includes demanding attention and following you around.
- Spraying and frequent urination: yes, female cats can spray when in heat. VCA notes some females urinate more often or spray urine on vertical objects to mark, which owners describe as her starting to pee on things or peeing everywhere.
Why do cats meow and scream when in heat? The calling advertises her to any male within earshot. If your cat won't stop meowing, the steps that make the meowing stop for good, or ease it meanwhile, are in the calming section below. What a cat feels when in heat is not known for certain; what you see is hormone-driven behavior.
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Signs a kitten is in heat look the same as in an adult. VCA's kitten guide says a kitten in heat typically becomes more affectionate, persistently rubbing against you and wanting attention, and may also roll, knead, yowl loudly, and mark.
One point of confusion: signs of heat exhaustion in cats are a different problem entirely. Heat exhaustion is about high temperature, not the reproductive cycle, and a cat that is panting, weak, or collapsing after being too warm needs a vet right away.
Does it hurt when cats are in heat? Heat is not known to be painful. The dramatic yowling and restlessness are better read as discomfort and frustration than as documented pain. Any cat that seems truly unwell, not just loud, should be seen by a vet.
What are the signs that a cat's heat is ending?
The main sign that a cat's heat is ending is that the calling, rolling, and raised-rear posture fade and she returns to her usual routine. If she was not bred, VCA notes she will usually be out of heat for a short break before the next heat starts.
How Long Is a Cat in Heat?
A cat in heat stays in heat for about seven days on average. VCA says one heat generally lasts several days, with the average length being seven days, and Merck lists cat estrus at 6 to 7 days.
The typical length of one heat matters because it tells you how many days a cat is in heat and when to expect relief. Whether it is the first time or a later cycle, for a house cat that is not mated, plan on roughly a week of calling and rolling, then a short break, then another heat. VCA puts the average full cycle at about three weeks.
How long a cat can stay in heat varies. Some cats run shorter or longer than a week. If a cat stays in heat continuously for more than 21 days, the Merck Veterinary Manual says follicular cysts should be suspected, and that cat should see a vet.
How long is a female cat in heat?
A female cat is in heat for about seven days on average, according to VCA, with Merck giving 6 to 7 days for estrus. Individual cats vary, so a heat of a few days or more than a week can be normal. Heat lasting more than 21 days straight is not normal and needs a vet check.
How long will my cat scream in heat?
Your cat will usually scream, or call, for the length of the heat itself, which averages about seven days. The yowling stops when estrus ends. In an unspayed cat that is not mated, it returns with the next heat, often within two to three weeks, so the noise comes in repeating waves through the season.
The table below lays out the four stages of the cat heat cycle, how long each lasts, what you see, and whether she can get pregnant.
| Stage | Typical length | What you see | Can she get pregnant? |
|---|---|---|---|
| Proestrus | Short, just before heat | Early rubbing and attention seeking; she does not yet accept a male | No, she is not yet receptive |
| Estrus (heat) | About 7 days on average (6 to 7 days per Merck) | Loud calling, rolling, raised rear, treading, spraying | Yes, at any point in heat |
| Interestrus | Short break between heats when not mated | Calm, normal behavior | No, not until the next estrus |
| Anestrus | The non-breeding season | No heat behavior | No |
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How Often Do Cats Go Into Heat?
An unspayed cat goes into heat every two to three weeks for most of the year. VCA's spaying guide states this directly, and Merck gives the cat cycle length as 14 to 21 days.
That is how often heat returns in an unspayed cat: a heat of about a week, a short break, and another heat, repeating through the breeding season. PetMD adds that unless breeding or pregnancy occurs, heat cycles may repeat throughout the season before ending in anestrus.
So how many times a year is a cat in heat? There is no single number, because the count depends on how long her season runs. Cats do not go into heat every month on a calendar schedule; they cycle every two to three weeks while in season. International Cat Care notes queens can have up to three litters per year.
Why is my cat in heat again after 2 weeks, or seemingly every other week? That is normal for the cat heat cycle. With a cycle of 14 to 21 days, a cat that was not bred can be back in heat roughly two weeks after the last one ended.
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If your cat seems always or constantly in heat, that is usually back-to-back cycles every two to three weeks; heat lasting more than 21 days straight needs a vet check. Two more points about the cat heat cycle:
- Do cats go in heat in the winter? Merck places the breeding season from spring through early autumn, but VCA says unspayed cats cycle for most of the year, so a cat in heat in winter is possible, especially indoors.
- Can cats die from a heat cycle? The heat itself is not described as fatal. The serious risks come from what repeated cycles lead to, mainly unplanned pregnancy and pyometra, covered below.
When Do Cats First Go Into Heat?
Most cats come into heat for the first time at about six months old. VCA states the average cat has her first estrus at 6 months, and International Cat Care says the first season is usually around six months of age but can be earlier.
The age of the first heat can be surprisingly young. International Cat Care notes kittens reach sexual maturity from around four months, which means a female kitten in heat can conceive long before she looks grown. VCA explains that the first estrous cycle starts when a female cat reaches puberty.
Is my kitten in heat? If a young female starts calling, rolling, and rubbing persistently, yes, she may be. A cat in heat for the first time shows the same signs as an adult, though owners often miss them because they do not expect them so early.
- Average age of first heat: about six months, per VCA and International Cat Care.
- Earliest sexual maturity: from around four months, per International Cat Care.
- Male cats: they do not go into heat; a male reaches sexual maturity and then stays ready to mate year round, reacting to females nearby.
Because a kitten can be bred in an early heat, VCA recommends spaying your kitten to prevent accidental pregnancies. The Cornell Feline Health Center advises that a female should be spayed prior to her first heat, and recommends three to six months of age.
Do Cats Bleed When in Heat?
No, cats do not normally bleed when they go into heat. VCA notes that cats show almost no physical changes, such as vaginal bleeding, during heat, and PetMD states plainly that cats do not normally bleed when in heat.
This is why cats rarely bleed visibly in heat: unlike dogs, a female cat's heat is mostly a behavioral event, not a bleeding one. Owners who expect spotting like a dog's season often miss the cycle entirely. You should not expect blood or noticeable discharge from a cat in heat.
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Can male cats be in heat? No. Male cat heat symptoms are really a male responding to a female in heat nearby:
- Roaming and trying to get outside
- Calling back to her
- Spraying urine to mark
If you think your male cat is in heat, the fix is neutering, which removes the drive. There is no heat cycle to wait out in a male cat.
If you do see blood or discharge from a female cat, do not assume it is heat. Bleeding or discharge in a cat is not a normal heat sign and is a reason to call your vet, especially in an unspayed cat.
How to Calm a Cat in Heat
You cannot switch off a heat at home, and there is no safe way to get a cat out of heat fast; spaying is the only permanent solution, as PetMD states. What you can do is deal with the week, and ease and soothe her, with comfort, play, toys, and a calm house.
What calms a cat in heat, and what does not, comes down to this: comfort measures can make her easier to live with, but no home remedy reliably ends a heat. Calming herbs and home remedies for cats in heat are not proven to work, and catnip and pheromones have no proven effect on a cat in heat.
Low-risk ways to help your cat in heat:
- Extra attention and petting, if she welcomes it.
- Interactive play to burn energy and give the calling something to compete with.
- A warm, quiet resting spot away from windows where she can see outdoor cats.
- Keeping her strictly indoors with doors and windows closed, so she cannot reach a male.
- A calm routine at night; our guide on how to keep your cat quiet at night has practical ideas.
Does catnip help cats in heat? A hospital study on PubMed found catnip and feline facial pheromone had no effect on cats' clinical or behavioral parameters, though it was not a heat study. Treat catnip for a cat in heat as a brief distraction, not a remedy.
Pheromone diffusers and sprays such as the Tranquil Tails Pet Zen Pheromone Calming Spray for Cats are marketed for stress, not heat, and they are not proven to calm a cat in heat. Some owners use them as a low-risk comfort measure alongside play and attention.
Calming music for cats in heat sits in the same category: harmless background comfort that will not end a heat. Melatonin is not an established heat treatment for cats, so ask your vet before giving it. Do not try the Q-tip trick; ask your vet instead. The tips that help most are patience, play, and a spay plan.
How do you relieve a cat in heat?
You relieve a cat in heat with comfort rather than cures: extra petting if she wants it, play sessions, a warm quiet space, and a calm routine. Keep her indoors and away from males. None of this stops the heat itself; only spaying does, so talk to your vet about timing.
Should I pet my cat when she's in heat?
Yes, you can pet your cat when she's in heat if she enjoys it. Most cats in heat become very affectionate and seek contact, per VCA. Stroking her back may trigger the raised-rear posture; that is a normal reflex, not a sign of pain. Stop if she seems irritated.
What not to do when a cat is in heat?
Here is what not to do when your cat is in heat:
- Do not let her outside, even briefly; she can become pregnant at any point in heat.
- Do not put her near an intact male.
- Do not punish the yowling or spraying; it is hormonal, not misbehavior.
- Do not give human medicines or untested herbal remedies.
- Do not assume every change is heat. A cat that refuses food is not showing a heat sign; see our guide to a cat not eating.
Some owners also add a calming supplement such as Purina Pro Plan Veterinary Diets Calming Care Cat Supplement to the routine. Like pheromones, it is not a heat treatment, and it will not shorten or stop a heat.
Risks of Repeated Heat Cycles
Repeated heat cycles carry two serious risks: unplanned pregnancy and pyometra, a uterine infection that can be fatal.
The pregnancy and pyometra risks of repeated cycles are the strongest reason not to let an unspayed cat keep cycling. VCA notes pregnancy is possible at any point in heat, gestation averages 65 days (64 to 71), and International Cat Care says queens can have up to three litters a year. Cats mating in heat can conceive quickly because breeding itself triggers ovulation.
Can cats get pregnant when not in heat? Mating, and so pregnancy, happens during estrus, the receptive stage. Can a cat be in heat and pregnant? A cat in heat while pregnant is not expected, and any heat behavior in a known-pregnant cat is worth a vet call. If you are unsure whether a cat can come back into heat while nursing kittens, ask your vet. Our cat pregnancy week by week guide covers what follows.
The Merck Veterinary Manual defines pyometra as a bacterial infection of the uterus due to hormonal changes in unspayed cats. VCA's pyometra guide says the toxic effects from the bacteria are fatal in many cases.
For most cats with pyometra, VCA states that surgery, meaning a spay, is the safest and most effective treatment. Can a cat die from being in heat? No, not from the heat itself, but she can die from pyometra, and each cycle is another window for this infection.
Spaying: The Only Way to Stop Heat Cycles
Spaying is the only treatment that permanently stops heat cycles. VCA states that spaying removes heat behaviors, and PetMD calls spaying the only permanent solution.
Spaying as the only permanent stop also brings health benefits beyond quieter nights. VCA says spaying prevents pyometra, and cats spayed before their first heat cycle have less than a 0.5% chance of developing breast cancer. Cornell advises spaying before the first heat, at three to six months of age; VCA notes the traditional spay age is six months.
Can a cat be spayed while in heat? Yes. VCA says cats can be spayed when they are in heat, but heat increases blood flow to the reproductive tract, which can raise the risk of bleeding during spay surgery. Your vet decides whether to operate now or wait.
Can spayed cats go into heat, and can neutered cats still be in heat? A spayed cat does not go into heat, because the organs that drive the cycle are removed. If a spayed or fixed female cat shows heat behavior, have your vet check her.
Planning ahead helps. See our guides to cat spay and neuter cost, cat spay recovery, and spay and neuter incision healing.
Cat in Heat FAQs
Frequently Asked Questions
Is it painful for a cat when in heat?
Veterinary references do not describe heat as painful. The yowling and restlessness are best understood as discomfort and frustration from hormones, not documented pain. If she seems sick rather than just loud, call your vet.
Can two female cats in heat live together?
Yes, two female cats in heat can live together, though the calling and restlessness can feed off each other. If they start fighting, separate them for a while and keep both indoors and away from males.
Can catnip calm a cat in heat?
Catnip may distract a cat briefly, but it does not stop heat. A PubMed-listed hospital study found catnip had no effect on cats' behavioral parameters, and it has not been shown to calm a cat in heat.
Can a cat get pregnant on her first heat?
Yes. International Cat Care notes a kitten can reach sexual maturity from around four months, so a cat can get pregnant on her first heat while still a kitten herself.
How do I know my cat's heat is over?
Her heat is over when the calling stops and the rolling and raised-rear posture fade, usually after about a week. If she is not spayed, expect the calls to return within two to three weeks.
Can a cat be spayed while in heat?
Yes, VCA says cats can be spayed in heat, though the extra blood flow can raise bleeding risk during surgery. Some vets operate right away and others prefer to wait until the heat ends.
Do cats go into heat in winter?
They can. Merck places the breeding season in spring through early autumn, the months of longer daylight, but VCA says unspayed cats cycle for most of the year, and an indoor cat can come into heat in winter.
Editor
The Webvet Editorial Team is the in-house group of pet-care editors and writers behind Webvet, operated by Smart Pet Collective. The team researches, writes, and maintains Webvet's pet health, behavior, and medication content. Every article follows a defined editorial process: research from reputable veterinary and scientific sources, careful drafting, mandatory review of medical content by a credentialed veterinarian, and dated publication. Health and medication articles are medically reviewed by a licensed veterinary professional before they go live and are kept current over time.
Veterinarian · BVMS MRCVS
Dr. Pippa Elliott, BVMS, MRCVS, is a veterinarian with nearly 30 years of experience in companion animal practice. Dr. Elliott earned her Bachelor of Veterinary Medicine and Surgery from the University of Glasgow. She was also designated a Member of the Royal College of Veterinary Surgeons. Married with 2 grown-up kids, Dr. Elliott has a naughty Puggle named Poggle, 3 cats and a bearded dragon.
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