Dog Pregnancy Calculator

Predict your dog's due date and track milestones.

Estimated Due Date:

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The Canine Pregnancy Timeline

The average gestation period for dogs is **63 days** from the date of ovulation. However, because the exact date of ovulation is often unknown, whelping (giving birth) typically occurs between **58 and 68 days** after mating. Knowing what happens inside your dog's womb week by week can help you prepare for the big day.

Key Developmental Milestones

Week 1-3: Early Development

The fertilized eggs travel to the uterus and implant in the lining (around day 16). You likely won't see any physical changes in your dog yet, though some may experience momentary morning sickness.

Week 4 (Day 22-28): Confirmation

Ultrasound Window: A vet can verify pregnancy via ultrasound as early as day 25-28. The fetal heartbeats are visible now. The embryos are about the size of walnuts.

Week 5-6 (Day 29-42): Rapid Growth

The embryos develop toes, claws, and whiskers. The skeleton begins to mineralize. Your dog's appetite will increase, and her belly will start to swell. This is the time to switch to a high-quality puppy food or performance diet for extra calories.

Week 7-8 (Day 43-56): Hair & Movement

Puppies grow fur and are nearly fully formed. You may be able to see or feel puppy movement against the abdominal wall. An **X-Ray** is recommended around Day 55 to count the number of skulls and spines, ensuring you know how many puppies to expect.

Week 9 (Day 57-65): Whelping Time

The puppies are ready for birth. Start monitoring your dog's temperature. A drop in body temperature below 99°F (37.2°C) often indicates that labor will start within 24 hours.

Signs of Labor