What this site is
AnimalDueDate is a small, independent website with free pregnancy and gestation calculators for pets and farm animals. It is made for dog and cat owners, small breeders and homestead and farm families who want a clear due date and a simple plan for the weeks ahead.
Who writes it
AnimalDueDate is written and maintained by Talat, a medical transcriptionist with years of experience checking clinical documentation for accuracy. Every figure on the site is checked line by line against the veterinary and university sources listed on each page. Talat is not a veterinarian, and the site is not reviewed by one — which is why every page links to its sources and asks you to work with your own vet.
Where our information comes from
Every number on this site comes from veterinary references and agricultural university extension services, such as the Merck Veterinary Manual and Oklahoma State University Extension. Each calculator lists its sources so you can check them yourself. Pages are reviewed regularly; the date of the last review is shown at the bottom of each calculator.
Spotted something that looks wrong or out of date? Please tell us — corrections are always welcome.
Disclaimer
The calculators and information on this site are for general education and planning only. They are not veterinary advice and are not a substitute for an examination by a qualified veterinarian. Due dates are estimates; real births can happen earlier or later. Always contact your vet about your animal's health, and contact them straight away if something seems wrong during pregnancy or birth.
Last updated November 2026.