Dog Pregnancy Calculator

This calculator helps estimate the expected whelping (birthing) date for a pregnant dog based on the date of mating.

Input Parameters

Calculation Results

Expected Whelping Date

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Based on a typical gestation period of approximately 63 days.

Calculation Formula

Expected Whelping Date = Date of Mating + 63 days

Where:
- Date of Mating: The date when the dog was mated.
- 63 days: The average gestation period for dogs.

Dog Pregnancy Calculator Calculator Usage Guide

Learn how to use the Dog Pregnancy Calculator and understand its working principles.

How to Use This Calculator

  1. Enter the Date of Mating when the dog was bred. This is the most important input for accurate calculation.
  2. Select the Breed of Dog if you want to see breed-specific information (though this calculator uses the standard 63-day gestation period).
  3. Click the Calculate button to get the estimated expected whelping date.
  4. The calculator will display the expected whelping date, which is typically 63 days after mating.

Understanding Dog Gestation Period

The typical gestation period for dogs is about 63 days, though this can vary slightly by breed and individual dog. Some breeds may have shorter or longer gestation periods:

  • Small breeds (like Chihuahuas) may have a slightly shorter gestation period of about 58-68 days.
  • Large breeds (like German Shepherds) may have a slightly longer gestation period of about 63-67 days.
  • Mixed breeds generally follow the average of about 63 days.

Important Notes

This calculator provides an estimate of the expected whelping date. The actual date may vary based on several factors:

  • Individual dog health and condition
  • Number of puppies in the litter
  • Multiple matings if breeding occurred over several days

For precise information, consult with a veterinarian who can conduct an ultrasound or physical examination to determine the actual gestation period and expected whelping date.