1. What is the Dog Pregnancy Calculator?

The Dog Pregnancy Calculator estimates the due date (whelping date) for pregnant dogs based on the mating date. The average canine pregnancy lasts approximately 63 days from conception.

2. How Does the Calculator Work?

The calculator uses the standard canine pregnancy formula:

Where:

• \( DD \) — Due Date (whelping date)
• \( MD \) — Mating Date (conception date)

Explanation: Canine pregnancy typically lasts 63 days (9 weeks) from conception, though normal range is 58-68 days.

3. Importance of Due Date Calculation

Details: Knowing the expected due date helps prepare for whelping, schedule veterinary checkups, and monitor for potential complications.

4. Using the Calculator

Tips: Enter the exact mating date if known, or the first date of breeding if multiple matings occurred. The calculator adds 63 days to this date.

5. Frequently Asked Questions (FAQ)

Q1: Is 63 days exact for all dogs?
A: While 63 days is average, normal range is 58-68 days. Smaller breeds often deliver earlier than larger breeds.

Q2: When should I prepare the whelping area?
A: Prepare by day 55. Monitor temperature daily starting day 58 (drop below 99°F indicates labor within 24 hours).

Q3: What if I don't know the exact mating date?
A: Ultrasound can estimate gestational age. Alternatively, use the midpoint between first and last breeding dates.

Q4: When should I contact a vet?
A: If no puppies by day 68, if labor starts before day 58, or if more than 2 hours pass between puppies during labor.

Q5: Can this calculator predict litter size?
A: No, this only estimates due date. Ultrasound or x-ray (after day 45) can determine litter size.