Pregnancy & Gestation Animal Calculators
Gestation due date calendars, trimester milestones, and reproductive timelines across all domestic animal species.
Expecting baby animals is an exciting time, and knowing when the big day will arrive makes all the difference. Pregnancy timelines vary widely across animals—from just about a month for mother rabbits (31 days) and two months for dogs and cats (63 days), to over nine months for cows (283 days) and nearly a full year for horses (340 days). Knowing your animal’s due date helps you prepare a quiet, warm nesting box or foaling stall in advance, adjust the mother’s food as her belly grows in the final weeks, and watch for early signs of labor so you can welcome healthy new arrivals with confidence.
Available Pregnancy & Gestation Tools9 Calculators
Dog Pregnancy & Whelping Due Date Calculator
Computes estimated whelping due date, current trimester, week-by-week fetal growth milestones, and pre-labor indicators for pregnant dogs.
Dog Heat Cycle & Estrus Timeline Calculator
Tracks dog heat cycle phases and identifies the peak fertile breeding window and projected timeline for subsequent reproductive cycles.
Cat Pregnancy & Queening Due Date Calculator
Track feline gestation day-by-day from mating to kitten birth. Calculates estimated due date, ultrasound checkups, and labor indicators.
Horse Pregnancy & Foaling Due Date Calculator
Computes estimated foaling due date, trimester milestones, and pre-foaling vaccination deadlines for pregnant mares.
Poultry Incubation & Hatch Date Calculator
Calculates the exact calendar hatch date, lockdown milestone, candling schedule, and target temperature/humidity for 10 poultry and gamebird species.
Cattle Pregnancy & Calving Due Date Calculator
Computes estimated calving date, dry-off date, and key pregnancy milestones for beef and dairy cows.
Goat Gestation & Kidding Due Date Calculator
Calculates goat kidding due date, gestation timeline, dry-off schedule, and CD&T booster windows based on breeding date.
Sheep Gestation & Lambing Due Date Calculator
Calculates sheep lambing due date, gestation stages, scanning windows, and pre-lambing management tasks based on mating date.
Rabbit Pregnancy & Kindling Due Date Calculator
Computes estimated kindling due date and nest box setup deadlines for pregnant does.
Frequently Asked Questions: Pregnancy & Gestation
Why does an expecting mother need extra food during late pregnancy?
Most puppy, kitten, and foal growth happens during the final few weeks of pregnancy. The mother needs extra energy and minerals to grow healthy babies without losing her own body weight.
Can weather or stress change an animal’s due date?
Yes. While average due dates give you a great target, natural variations of a few days are completely normal depending on litter size, the mother’s age, and seasonal weather.