Veterinary Disclaimer

Last updated: November 11, 2026

The content and calculators on DogDueDateCalculator.com are for general information only. They aren’t veterinary advice, and using them doesn’t create a veterinarian–client relationship.

Calculators give estimates

• Due dates are estimated from mating dates. Mating dates don’t show exactly when a dog ovulated, so actual whelping dates can differ.
• Heat cycle and fertile-day predictions are calendar averages. They can’t confirm ovulation or guarantee fertility.
• Only veterinary tests, such as progesterone testing, ultrasound, relaxin tests and X-rays, can confirm ovulation, pregnancy or litter size.

Always talk to your vet

Always ask your veterinarian about breeding, pregnancy, nutrition, medications and whelping. Never delay or ignore professional advice because of something you read here.

Emergencies

If your dog is struggling in labor, bleeding heavily, collapsing or seems seriously unwell, contact your veterinarian or an emergency animal hospital right away.