Cat heat cycle guide: stages, signs, mating timing and what to record

Updated 2026-07-30 · FanMeowy

Queens are seasonally polyestrous long-day breeders, cycling repeatedly while daylight is long; indoor cats under artificial light may cycle all year. A heat commonly lasts about a week, and an unbred queen usually returns within one to three weeks. Cats are induced ovulators (mating triggers ovulation), so a single mating may not be enough. Unlike dogs, queens in heat do not bleed. Consult your veterinarian about any particular queen.

The stages of a queen's cycle

The feline cycle is not the canine one with different names. A queen does not have a single annual season with a bleeding phase; she runs short cycles back to back through the breeding season, and what happens after each heat depends on whether she ovulated. That single fork — ovulation or no ovulation — is what decides whether she is back in your face calling in ten days or quiet for six weeks.

The ranges below are the ones you will find in general feline reproduction literature. Individual queens sit outside them regularly, and a first cycle in a young queen is often short and untidy. Use the table to recognise where you are, not to predict what your particular cat will do — and take any question about a specific animal to your veterinarian.

Stages of the feline reproductive cycle (typical published ranges; individual queens vary widely)
StageTypical lengthWhat you actually see
ProestrusAbout 1–2 days, frequently missed entirelyMild rubbing, some calling, restlessness. She attracts a male but will not accept him yet
Estrus (heat)Commonly about a week; roughly 2–19 days is reportedLoud calling, rolling, treading, lordosis with the tail held to one side, and acceptance of the male. No bleeding
InterestrusUsually about 1–3 weeksThe quiet gap after a heat in which she was not mated or did not ovulate. Then the whole thing starts again
Diestrus (ovulated, not pregnant)Roughly 35–45 daysPseudopregnancy: cycling stops, she may look and behave subtly pregnant, and no kittens arrive
PregnancyAbout 63–67 days from matingCycling stops. Confirm with your veterinarian rather than by behaviour — the early signs overlap with pseudopregnancy
AnestrusWeeks to months, season-dependentThe seasonal off switch. It may barely appear in indoor cats living under long artificial light

How to tell a queen is in heat

The single most misleading thing a new breeder brings across from dogs is the expectation of blood. Queens in heat do not bleed, and there is normally no significant discharge. The signal is behavioural, it is loud, and once you have seen it you will not mistake it again.

What you are looking for is a cluster of signs, not one of them alone. A queen doing all of these at once is in heat; a queen doing one of them is a cat having a day.

  • Calling: persistent, penetrating vocalisation, often worst at night. This is the sign most owners report as "she sounds like she is in pain".
  • Rolling and restlessness: rolling on the floor, pacing, sudden bursts of activity.
  • Rubbing: face, cheeks and body rubbed insistently against furniture, doors and people.
  • Treading and lordosis: hindquarters raised, front end down, back feet treading, tail held to one side — often triggered by stroking over the lower back.
  • Increased affection or clinginess, and sometimes appetite change.
  • Urine marking: some queens spray during heat, which surprises people who think it is a male behaviour.
  • No bleeding and no marked discharge. Blood, pus-like discharge, straining or a foul smell is not heat — that is a call to your veterinarian, today.
  • Silent heat: some queens, particularly nervous ones or those low in a group hierarchy, cycle with almost no visible signs. If you suspect it, your veterinarian can advise on assessment rather than you guessing month after month.

Season, daylight and puberty

Cats are long-day breeders. Cycling switches on as day length increases and tails off as it shortens, which in the northern hemisphere puts the busy months roughly between late winter and autumn. This is why a cattery can go from "nothing is happening" to three queens calling at once within a fortnight in the spring.

Artificial light blurs that pattern. Cats living indoors under household lighting are exposed to long effective days all year, and many cycle straight through the winter. That is worth knowing before you assume a queen is "off season" — and worth knowing before you decide to manipulate lighting in your cattery, which is a management choice to think through carefully rather than a switch to flip.

Puberty commonly arrives somewhere between five and nine months, but the spread is wide: some lines start markedly earlier, some slow-maturing longhaired breeds much later, and a kitten born just before the season starts may cycle at an age that shocks you. Two practical consequences follow. Intact males and females must be separated before you think it is necessary. And cycling is not the same as being ready to breed — physical maturity, completed health testing and your registry or breed club code of ethics all come first, with the final call on a particular queen belonging to your veterinarian.

Induced ovulation and mating timing

Cats do not ovulate on a schedule. Ovulation is triggered by the physical stimulus of mating, which is why the queen screams and turns on the male afterwards, and why a single brief mating may not produce enough stimulus to release eggs at all. This one fact drives nearly every practical decision about how matings are managed.

The common approach is to introduce the queen to the stud once she is properly in standing heat rather than on the first sign of calling, and to allow repeated matings over a couple of days. Precisely when, how often and for how long is a judgement made with the stud owner and your veterinarian, taking both cats into account.

  • Record the date of every mating, not just the first. Due dates, and any later question about which mating produced the litter, are reconstructed from those dates.
  • Repeated matings across more than one day are usual practice, because the stimulus needed to trigger ovulation is generally more than a single mating provides.
  • Ovulation typically follows mating by somewhere in the region of a day or two, and pregnancy runs about 63–67 days from mating — not from the day you noticed she was calling.
  • One litter can have more than one father if a queen is mated by different males in the same heat. Control access completely during the mating window, or your pedigree is a guess.
  • If she ovulated but did not conceive, expect roughly five to six weeks of quiet pseudopregnancy before she cycles again. If she did not ovulate, she can be calling again within one to three weeks.
  • Do not confirm pregnancy by behaviour or by "she stopped calling". Ask your veterinarian to confirm it, and write down the confirmation date.

Repeated cycling without breeding: the health angle

A queen who cycles again and again without ever ovulating is not in a neutral state. Repeated non-ovulatory cycles are associated in the veterinary literature with changes in the uterus over time, including the cystic endometrial hyperplasia and pyometra complex, and continuous calling is stressful for the cat and for everyone living with her. This is one of the reasons that leaving an intact queen to cycle indefinitely, with no breeding plan and no retirement plan, is not a kind default.

None of that means you should reach for a hormonal fix. Suppressing or manipulating a cycle is a veterinary decision with real trade-offs, and it is not something to arrange from a forum thread or a supplier. The same goes for retiring a queen: how many litters, at what age, and when she should be spayed are decisions to take with your veterinarian and within your registry or breed club code of ethics.

  • Heat that seems to go on and on, or a queen who never appears to leave heat, warrants a veterinary assessment rather than waiting it out.
  • Any vaginal discharge, straining, fever, lethargy, or a queen who is off her food is not heat behaviour. Call your veterinarian.
  • Heat signs in a queen who has already been spayed also need investigating — that is a known clinical scenario, not something to shrug at.
  • Skipping a season, or a plan to breed on a schedule rather than every cycle, should be discussed with your veterinarian for that individual queen.
  • Plan retirement while she is still young. Deciding a queen's last litter in advance is a better position than deciding it in an emergency.

What to record for every cycle

Published averages describe cats in general. What actually helps you plan is the pattern of the queen in front of you: how often she cycles, how long she calls, how she behaves when she is truly ready, and what happened the last three times she was mated. That only exists if you write it down while it is happening — three cycles later, memory is fiction.

Keep the record on the cat rather than in a calendar. A note that says "Tuesday: calling" is worthless in eighteen months; an entry attached to a named queen, with the dates around it, is what tells you her interval is shortening or that she has skipped a season. FanMeowy Cattery Manager keeps heat entries, matings and the resulting pregnancy on each queen's own profile, so a cycle logged today shows up on her history and rolls forward into a due date; core record keeping is free and it is on the App Store. Any tool that ties the entry to a specific cat and lets you look back across cycles will do the job — the discipline matters more than the software.

The minimum record for one heat cycle
FieldWhy you will want it later
Queen and cycle start dateThe anchor for every interval you will ever calculate for this cat
Daily signsHow her heat builds — the difference between early calling and standing heat, in her own pattern
Whether she was mated, and by which studPedigree accuracy and the starting point of the pregnancy record
Every mating dateDue dates come from mating dates, and repeated matings are normal practice
End date of the heatGives you her typical heat length instead of a textbook average
OutcomePregnant, ovulated but not pregnant, or straight back into heat — each implies a different next step
Days to the next heatHer real interval, which is the number that lets you plan a season
Veterinary notesConfirmation dates, examinations and anything unusual, attached to the cycle it belongs to

Frequently Asked Questions

How long does a cat stay in heat?

A heat commonly lasts around a week, with a reported range of roughly 2 to 19 days. If she is not mated, she typically goes quiet for one to three weeks and then starts again — which is why an unbred queen can seem to be in heat almost continuously through the season. Individual queens vary; ask your veterinarian about your cat.

How often do cats come into heat?

Repeatedly through the breeding season. Cats are long-day breeders, so cycling follows day length — in the northern hemisphere, roughly late winter to autumn. Indoor queens living under artificial light are exposed to long effective days year-round and many cycle right through the winter, so "off season" is not something you can assume.

Do cats bleed when they are in heat?

No. Unlike dogs, queens in heat do not normally bleed and there is no significant discharge. Heat shows as behaviour: calling, rolling, rubbing, treading and lordosis with the tail held aside. Blood, pus-like discharge, straining, fever or lethargy is not heat and should be seen by your veterinarian promptly.

At what age does a queen have her first heat, and should she be bred then?

Puberty commonly falls between five and nine months, earlier in some lines and considerably later in some slow-maturing breeds. A first heat is not a green light. Physical maturity, completed breed health testing and your registry or breed club code of ethics come first, and whether a particular queen is ready is a decision for your veterinarian.

What happens if a queen is mated but does not get pregnant?

If mating triggered ovulation without conception, she usually enters a pseudopregnancy of roughly 35–45 days before cycling again. If ovulation was not triggered at all, she can be back in heat within one to three weeks. That difference is a useful clue about what went wrong, which is why the mating dates and the return-to-heat date are both worth recording.

Not using FanMeowy Cattery Manager yet?See what the app does for breeders

© 2026 FanMeowy - Pet Management Platform