Dog Breeding Pregnancy Calculator
Whelping date is calculated 63 days from ovulation – not insemination. Insemination should be 48 hours after ovulation to allow the eggs to mature and become ready for fertilization.
The most accurate way of determining whelping date is by the following 3 time points:
- Luteinizing Hormone Peak – 65 days
- Ovulation – 63 days
- First Day of Diestrus – 58 days