Animal Pregnancy
Gestation and breeding calculators for dogs, goats, and more.
Calculators & Tools
Goat Gestation Calculator
The Goat Gestation Calculator estimates the kidding date by adding the standard goat gestation period of 150 days to the confirmed breeding or mating date. Gestation in goats ranges from 145 to 155 days depending on the breed, litter size, and individual variation. Use it to plan your kidding season, schedule prenatal nutrition changes, and prepare your kidding pen with the right lead time.
Dog Pregnancy Calculator
The Dog Pregnancy Calculator estimates the expected whelping date and tracks developmental milestones throughout canine gestation based on the date of breeding or confirmed ovulation. Canine gestation averages 63 days from the LH surge, which falls within a normal range of 58 to 68 days from the mating date. Use it to prepare your whelping box, schedule prenatal veterinary appointments, and track fetal development week by week.
Cat Pregnancy Calculator
The Cat Pregnancy Calculator works out the expected queening date based on your cat's mating date and breed type. Cat gestation averages 63 to 67 days, with variation across breeds. Use it to prepare a nesting box, plan veterinary visits, and track trimester milestones.
Swine Gestation Calculator
The Swine Gestation Calculator works out the expected farrowing date from the breeding date and breed. Pig gestation follows the famous 3-3-3 rule: 3 months, 3 weeks, and 3 days — approximately 114 to 116 days. Use it to set up the farrowing crate, plan pre-farrowing feed reduction, and schedule colostrum monitoring.
Cow Gestation Calculator
The Cow Gestation Calculator works out the expected calving date from the breeding or service date and breed. Cattle gestation averages 279 to 290 days depending on breed. Use it to plan pre-calving nutrition, vaccination schedules, and calving pen preparation.
Sheep Gestation Calculator
The Sheep Gestation Calculator works out the expected lambing date from the tupping date and breed. Sheep gestation averages 142 to 152 days, approximately 5 months. Use it to plan lambing pen preparation, pre-lambing vaccination schedules, and the critical third-trimester nutrition step-up.
Llama Gestation Calculator
The Llama Gestation Calculator works out the expected cria birth date from the breeding date and fiber type. Llama gestation averages 331 to 359 days, with a midpoint near 350 days. Use it to plan cria arrival, monitor dam nutrition in late gestation, and set up the birthing area in advance.
Guinea Pig Pregnancy Calculator
The Guinea Pig Pregnancy Calculator works out the expected birth date from the mating date and breed type. Guinea pig gestation averages 63 to 72 days, among the longest for small mammals relative to body size. Use it to plan nesting preparation, vitamin C supplementation, and veterinary check-ups.
Rabbit Gestation Calculator
The Rabbit Gestation Calculator works out the expected kindling date from the mating date and breed. Rabbit gestation averages 28 to 31 days, one of the shortest gestation periods among mammals. Use it to time nest box placement, plan weaning schedules, and prepare for the arrival of kits.
Mare Gestation Calculator
The Mare Gestation Calculator works out the expected foaling date from the last breeding date and breed. Equine gestation averages 335 to 342 days, with significant individual variation. Use it to schedule pre-foaling vaccinations, plan foaling watch schedules, and prepare the foaling stall.