Dog & Cat Pregnancy Due Date Calculator

How long are dogs and cats pregnant for?

Dogs are typically pregnant for about 58-68 days (average 63 days) from ovulation. Cats are typically pregnant for about 61-68 days (average 64 days). Both figures are measured from the breeding/ovulation date, not from a confirmed diagnosis date.

Why is this only an estimate?

The exact ovulation date is hard to pinpoint without progesterone testing, and gestation length naturally varies by a week or so between individuals. Your vet can confirm pregnancy and refine the due date with an ultrasound around day 25-35.

What should I do to prepare as the due date approaches?

Schedule a prenatal check with your vet, prepare a quiet whelping/queening area, and have your vet's emergency contact ready. Contact your vet immediately if labor lasts more than a few hours without progress, or if it's been more than 24 hours since the due date range ended.

Does breed or litter size change the due date?

Gestation length is fairly consistent across breeds, though very large litters can sometimes arrive a few days early and small litters a few days late. Always confirm timing with your veterinarian rather than relying on the date range alone.