Queen Heat Cycle: 4-10 Days, Every 2-3 Weeks

In a cat that cycles through the breeding season, estrus lasts 4 to 10 days and the next one starts 2 to 3 weeks after the last one ends. The record that makes this manageable has 3 fields: the dates, the signs, and the weight. Without those 3 columns, every owner and every breeder ends up guessing, and guessing is how a 10-day estrus that has run for 3 weeks gets missed.

The numbers on the calendar

Most queens show 4 to 10 days of calling behavior, then 2 to 3 weeks of quiet before the cycle repeats. A queen that is not bred can cycle 3 to 5 times in a season, and the season itself usually runs from late winter to early autumn, which in the northern hemisphere means February through September. Indoor lighting changes that: a queen under 14 hours of artificial light can cycle through the year with only 4 to 6 weeks of rest in total.

Why the gap is 2 to 3 weeks

Cats are induced ovulators, so a queen that is not bred does not form a corpus luteum and does not get the 60-day pause a dog gets. The follicle simply regresses, hormone levels fall over 7 to 10 days, and a new wave starts. That is why the interval looks short and why the cycle can look continuous: 10 days of calling, 14 days of quiet, 10 days of calling again is a normal pattern, not a problem. It also explains why the same queen can look pregnant one month and be calling the next.

The 4 stages, in days

Stage	Days	Day count from day 1	Main signs	Record field
Proestrus	1-2	1-2	rubbing, restlessness, no calling yet	start date
Estrus	4-10	3-12	calling, lordosis, tail to one side	signs, 1-3
Interestrus	14-21	13-33	quiet, normal appetite	end date
Anestrus	60-120	34-153	no cycles, short daylight	weight at restart

Read the day-count column as an anchor rather than a forecast. Day 1 is the first day of calling, so a queen still calling on day 12 has run 2 days past the 10-day line, and that note goes in the record before anyone decides anything. If the quiet phase is 14 to 21 days, the next day 1 lands between day 27 and 34; a next day 1 on day 18 means the rest phase was 6 days or less and belongs in the vet conversation.

The 3 record fields, and what goes in them

Field 1 is dates: first day of calling, last day of calling, and the gap to the next first day, written as 2 numbers, for example 4 and 18. Field 2 is signs, scored 1 to 3: 1 for rubbing and restlessness only, 2 for calling with appetite change, 3 for calling with rolling, yowling at night, and urine marking. Field 3 is weight, taken on the same scale at the same time of day, on day 1 of each estrus and again 10 days later; a 200 g drop can be the first sign that a long estrus is costing her condition.

Light, temperature, and the 14-hour line

Day length is the switch. Above roughly 14 hours of light, most queens keep cycling; below 12 hours, most stop. If the goal is a predictable interval, keep the room at 20 to 24 C and avoid switching a bright light on at 23:00 for 2 hours, because that single change can restart a cycle 10 days early. If the goal is rest, 10 to 12 hours of light for 8 weeks is the usual management tool, and it should be planned with a vet rather than improvised.

Reading the signs without over-reading them

Calling is loud, low, and repeated, often 20 to 30 times an hour at night, and it is the sign owners notice first. Lordosis, meaning the front legs down and the rear raised, is the most reliable single sign; it usually appears on day 2 or 3 and fades 1 to 2 days before the end. Appetite often drops by 20 to 30 percent during estrus and returns within 3 days. A queen that eats normally and shows no lordosis but still yowls may be in a false pattern, so score the signs and check the dates rather than reacting to 1 night.

When the cycle itself is the problem

Three patterns need a vet: estrus that runs past 10 days and repeats that way for 2 or 3 cycles, cycles that come less than 10 days apart with no quiet phase, and a queen that stops cycling for more than 4 months in the middle of the season. A persistent estrus can point to follicular cysts, and a queen with a long estrus plus drinking more water, a poor appetite, or a discharge needs a same-week exam for pyometra, which can become an emergency in 24 to 48 hours. Weight loss of 5 percent or more across 2 cycles is also a reason to book, not to wait.

What the record is for

These 3 fields answer 4 practical questions: is the interval 2 to 3 weeks or 6, is the estrus 4 to 10 days or 14, is the queen losing condition, and is the season behaving the way the light in the room says it should. Records also matter for welfare decisions. Queens that cycle back to back without a rest lose weight and condition, and programs that keep 1 or 2 litters per queen with a gap of at least 1 season have far fewer dystocia calls than programs that breed every cycle. The log supports those choices; it does not decide them for you.

Start the log today: 1) write the first and last day of calling, plus the gap to the next one, as 2 numbers; 2) score signs 1 to 3 every evening rather than once a week; 3) weigh on day 1 of each estrus and again 10 days later on the same scale; 4) review 3 cycles together before drawing any conclusion; 5) book an exam for estrus over 10 days, a gap under 10 days, or a 5 percent weight loss. Where those days land against the calendar is covered in heat cycle timing, and the other half of the timeline is set out in queen gestation length.

Frequently asked

How long does a queen stay in heat each time?

Typically 4 to 10 days of calling behavior, followed by 2 to 3 weeks of quiet before the next cycle. Queens that are not bred can repeat 3 to 5 times in a season, and indoor light above about 14 hours a day can keep the cycle running all year.

Is a 2-week gap between heats normal?

Yes. Because cats are induced ovulators, a queen that is not bred gets no 60-day luteal pause, so a 10-day estrus followed by 14 quiet days is a normal pattern. A gap under 10 days with no quiet phase, or estrus running past 10 days for 2 or 3 cycles, is the pattern to bring to a vet.

What should I write down each cycle?

Three fields cover it: the first and last day of calling plus the gap to the next cycle as two numbers, a 1 to 3 sign score taken every evening, and the weight on day 1 and again 10 days later on the same scale.