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Dog heat cycle calendar

Enter when her last heat started and her usual rhythm, and earlier heats if you can: you get her next heats of the year and the usual mating window.

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Her heats come back about
With no answer, the calculation counts six months, the most common rhythm.
Earlier heats (optional)With at least two dates, the calculation follows her actual interval.

Enter when her last heat started.

An indicative estimate: it doesn't replace your vet's advice.

How often does a dog come into heat?

Many bitches come into heat about every six months, but not all. Some, often of small breeds, cycle three times a year; large breeds often space their cycles 8 to 12 months apart; a few breeds, like the Basenji or the Czechoslovakian Wolfdog, have only one a year. The rhythm stays fairly regular for a given bitch, though.

That's why the calculator asks for her usual rhythm, then relies on her own cycles as soon as you add earlier heats: it then takes the median interval of her last cycles. With no information at all, it counts about six months.

When should she be mated?

Day 1 of the heat is the first day of discharge. Matings most often happen between days 10 and 14, but the timing of ovulation varies a lot from one bitch to another.

Progesterone tests at your vet's show the right time far more reliably than a calendar: use the window shown to plan, not to decide.

Frequently asked questions

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What if all this worked itself out?

In Affixe, every female has her calendar, every litter its tracking, and a reminder arrives in the morning. Free to start.

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