Cat in Heat Symptoms: 8 Signs, How Long Heat Lasts & What to Do (2026)

The most common cat in heat symptoms are loud yowling, extra affection, rolling on the floor, raising the hindquarters when petted, restlessness, and more frequent urination or spraying. Most cats show these signs for about a week, and VCA notes that cats don’t usually have the visible bleeding many owners expect from dogs. Unspayed cats can repeat the cycle every few weeks during breeding season.

If your young female cat suddenly seems to be crying all night or acting out of character, heat is a likely explanation, but it isn’t the only one. This guide explains each sign, how long heat lasts, how often it returns, which symptoms need a vet, and how to keep your cat comfortable.

Cat in Heat Symptoms: 8 Signs to Watch For

If you’re working out how to tell if a cat is in heat, start with behavior: most cat in heat symptoms are changes in behavior rather than physical changes. VCA’s guide to estrous cycles in cats and the Merck Veterinary Manual describe a consistent pattern:

1. Loud, repeated vocalizing. Many cats yowl or call, often at night. Merck describes queens yowling loudly and repeatedly.
2. Unusual affection. VCA notes most cats become very affectionate, even demanding, and rub against people and furniture.
3. Rolling on the floor. Cats in heat tend to roll more often than usual.
4. Raised hindquarters. When stroked along the back, many cats raise their rear end and tread with their back legs.
5. Kneading. Some knead with their paws, including the back feet.
6. Frequent urination or spraying. VCA says some cats urinate more often or spray urine on vertical surfaces, which can attract male cats.
7. Restlessness. PetMD veterinarian Dr. Jamie Lovejoy notes restlessness is common, and some cats eat a little less.
8. Trying to get outside. Some cats in heat hang around doors and windows or try to slip out, and VCA notes male cats may try to get in.

These signs a cat is in heat usually appear together for several days. Not every cat shows every sign. A quiet cat may simply seem clingier than normal, while another may be loud enough to keep the household awake.

What Does It Mean When a Cat Is in Heat?

So, what is heat in cats? “In heat,” or estrus, is the part of the reproductive cycle when an unspayed female cat is ready to mate. VCA explains that cats are seasonally polyestrous, meaning they have several cycles during the breeding season, and they’re described as “long-day breeders” because longer daylight hours trigger cycling.

Cats are also induced ovulators: mating itself triggers the release of eggs. That’s why an unmated cat can go out of heat and come back into it again a short time later. If she does become pregnant, Merck notes pregnancy lasts about 60 to 65 days.

When Do Cats Go Into Heat?

VCA says puberty in cats occurs at about six months of age on average. Timing varies: Dr. Lovejoy writes that first heat typically arrives between 5 and 9 months, with some kittens starting at 3 to 4 months and others not until about 18 months. AAHA notes female kittens can enter their first heat as early as four months.

Season matters too. In the Northern Hemisphere, VCA describes the breeding season as running roughly from January to late fall. Indoor cats living under artificial light, and cats in warm, tropical climates, may cycle all year.

If you’ve just adopted a kitten, the first cat in heat symptoms can appear sooner than many owners expect, so talk to your vet about spay timing early.

How Long Do Cats Stay in Heat?

Owners often ask how long is a cat in heat, or how long do cats stay in season. According to VCA, each heat generally lasts several days, with an average of seven days and a possible range of 1 to 21 days. PetMD gives a typical range of about 3 to 14 days. The cat heat cycle has several stages:

Stage lengths based on PetMD (Dr. Jamie Lovejoy, 2026) and VCA. Individual cats vary.

So how many days is a cat in heat? For many cats, about seven. How long does cat heat last beyond that average? It varies between cats and between cycles, which is why tracking each one helps.

How Often Do Cats Go Into Heat?

An unspayed cat that isn’t mated will usually come back into heat again and again during the breeding season. VCA’s kitten guide says she typically cycles about every three weeks, and its adult guide notes the complete cycle can range from one to six weeks. That means cat in heat symptoms may seem to come and go all spring and summer.

Cat in Heat Symptoms or Something Else?

Cat in heat behavior can look dramatic. Some owners worry their cat is in pain when she rolls, cries, and crouches. Use this table as a guide, and call your vet whenever you’re unsure.

Unspayed cats are at risk of pyometra, a serious uterine infection. VCA describes it as life-threatening and in need of prompt treatment. It usually develops within about four weeks of a heat, though it can appear two to 16 weeks afterward. With an open cervix, pus may drain from the vulva. With a closed cervix, the belly may swell and the cat can become severely ill quickly. PetMD also advises calling your vet for vaginal discharge, appetite loss, vomiting, or diarrhea.

If your cat’s behavior changes and heat doesn’t seem to fit, our guide to why your cat is acting different all of a sudden covers other possible causes.

What to Do When Your Cat Is in Heat

You can’t switch off cat in heat symptoms at home, but you can keep her safe and make the week easier for everyone:

1. Keep her indoors. Close windows, check screens, and watch doors closely. A cat in heat can become pregnant quickly if she slips out, and PetMD suggests a carrier or cat backpack if she must travel.
2. Separate her from intact males. Keep her away from any unneutered tomcat in the home, and see our guide to tomcat cheeks if you’re unsure whether a male is intact.
3. Offer play and attention. PetMD notes enrichment, a steady routine, and extra attention may help her settle.
4. Clean urine marks promptly. Use an enzyme-based cleaner so the scent doesn’t encourage repeat marking. If problems continue after heat, see our tips for when a cat stops using the litter box.
5. Don’t give medications or supplements to “calm” her. Ask your vet before giving any product, and never guess at a dose.
6. Book a spay consultation. This is the only lasting solution.

Common mistakes owners make

Spaying: The Only Reliable Way to Stop Heat Cycles

VCA says the best way to prevent pregnancy is spaying, and most vets recommend it around six months of age, before the first cycle. AAHA endorses the Fix Felines by Five approach, recommending that cats be sterilized by five months of age. The ASPCA also advises scheduling surgery before five months to help avoid urine spraying and pregnancy, and the AVMA states there is no known benefit to waiting until after a first heat.

• Ends heat behavior: VCA notes spaying stops heat cycles and the behaviors that come with them.
• Prevents pyometra: VCA and the AVMA note spaying prevents uterine infection.
• Lowers mammary cancer risk: Cornell’s Feline Health Center cites a study in which cats spayed before six months had a 91% reduction in mammary tumor risk, and those spayed before one year had an 86% reduction.

Can a cat be spayed while in heat? Yes, in many cases. VCA notes increased blood flow can raise the risk of bleeding during surgery, but generally only slightly. Your vet will decide whether to operate now or wait until the heat ends.

Cat in Heat Symptoms: FAQs

How long does a cat stay in heat?

Usually about a week. VCA puts the average at seven days, with a range of 1 to 21 days. If she isn’t mated, she may come back into heat a few weeks later.

How often do cats go into heat?

Unspayed cats often cycle about every three weeks during breeding season, which runs roughly from January to late fall in the Northern Hemisphere. Indoor cats may cycle all year.

At what age do cats go into heat?

Often around six months, though some kittens cycle as early as four months and others later. Ask your vet about spaying before the first heat.

Do cats bleed when they are in heat?

Not usually. Cat in heat symptoms are mostly behavioral. Vaginal bleeding or discharge isn’t a typical heat sign, so contact your veterinarian promptly if you see it.

How can I tell if my cat is in heat or in pain?

Heat brings yowling, rolling, rubbing, and a raised rear when petted, and the cat usually still eats and seeks attention. Hiding, vomiting, lethargy, appetite loss, or discharge point to a problem that needs a vet.

How can I calm a cat in heat?

Keep her indoors and away from intact males, stick to a routine, and offer extra play and attention. Don’t give medications unless your vet prescribes them. Spaying is the lasting solution.

Can a cat get spayed while in heat?

Often, yes. VCA notes the bleeding risk rises only slightly in cats. Your veterinarian will advise whether to spay now or after the heat ends.

Final Verdict: Cat in Heat Symptoms Explained

Cat in heat symptoms usually mean yowling, affection, rolling, a raised rear end, and urine marking for about a week, often repeating every few weeks. Keep her indoors and calm, call your vet for bleeding, discharge, or illness, and talk to your veterinarian about spaying to end the cycles for good.