🐕 Dog Pregnancy Calculator
Calculate your dog’s due date and track pregnancy week by week
Expected Due Date
Pregnancy Timeline – Week by Week
Understanding Dog Pregnancy
Gestation Period Overview
The average dog pregnancy lasts 63 days from ovulation, or approximately 58-68 days from mating. This period is consistent across all dog breeds and sizes, though there can be slight variations based on individual factors.
Important: Ovulation timing provides the most accurate due date calculation (63 days ± 48 hours), while mating date calculations have a wider range due to timing uncertainty.
Breed and Size Considerations
While gestation length is relatively consistent across breeds, research shows some variations:
- Small/Toy Breeds: May have slightly shorter pregnancies (58-63 days)
- Large/Giant Breeds: May carry puppies slightly longer (63-67 days)
- Litter Size Effect: Smaller litters tend to go longer, larger litters may deliver earlier
Key Pregnancy Milestones
- Day 7-14: Embryo implantation in the uterus
- Day 22-28: Pregnancy can be detected via blood test (relaxin hormone)
- Day 28-35: Ultrasound can confirm pregnancy and estimate puppy count
- Day 45: X-rays can show puppy skeletons and provide accurate count
- Day 58-63: Temperature drop indicates labor within 24 hours
Signs of Pregnancy
Early signs may include decreased appetite, mild lethargy, and behavioral changes around week 3-4. More obvious signs appear after week 4:
- Enlarged abdomen and weight gain
- Enlarged and darkened nipples
- Increased appetite (after initial decrease)
- Nesting behavior in later weeks
- Milk production near due date
Important Care Guidelines
- Nutrition: Feed high-quality pregnancy/puppy food from week 6 onward
- Exercise: Maintain light to moderate exercise; avoid strenuous activity
- Veterinary Care: Schedule regular checkups and emergency vet contact
- Medications: Avoid unnecessary medications; consult vet for any treatments
- Whelping Box: Prepare a quiet, comfortable birthing area by week 7
When to Contact Your Veterinarian
Seek immediate veterinary attention if you notice:
- Labor lasting more than 24 hours
- More than 2 hours between puppy deliveries
- Excessive bleeding or discharge
- Signs of distress or pain
- Temperature remaining low for more than 24 hours without labor starting
Disclaimer: This calculator provides estimates based on veterinary research. Always consult with your veterinarian for professional guidance throughout your dog’s pregnancy and whelping process.
