1. What is Dog Pregnancy Calculator?

The Dog Pregnancy Calculator estimates the whelp date (delivery date) based on the known ovulation date. The standard canine gestation period is approximately 63 days from ovulation.

2. How Does the Calculator Work?

The calculator uses the standard canine gestation formula:

Where:

• \( Ovulation\_Date \) — The date when ovulation was confirmed
• \( 63\ days \) — Average gestation period from ovulation to whelping

Explanation: While the total gestation period from breeding can vary (58-68 days), counting 63 days from ovulation provides the most accurate prediction.

3. Importance of Accurate Whelp Date

Details: Knowing the precise whelp date helps prepare for delivery, schedule veterinary checks, and monitor for potential complications.

4. Using the Calculator

Tips: Enter the confirmed ovulation date (usually determined through progesterone testing). The calculator will add 63 days to estimate the whelp date.

5. Frequently Asked Questions (FAQ)

Q1: Why use ovulation date instead of breeding date?
A: Ovulation date is more accurate because sperm can survive several days in the female reproductive tract, and conception may occur days after breeding.

Q2: How accurate is the 63-day calculation?
A: When based on confirmed ovulation, it's very accurate (±1 day). Based on breeding dates alone, the range is typically 58-68 days.

Q3: When should progesterone testing be done?
A: Testing should begin when the female shows signs of estrus (swollen vulva, bloody discharge), typically every 2-3 days until ovulation is confirmed.

Q4: Are there factors that can change gestation length?
A: Litter size (larger litters may deliver earlier), breed (some variation among breeds), and individual variations can affect gestation length slightly.

Q5: When should I prepare the whelping area?
A: Prepare at least one week before the calculated whelp date to allow the mother to become accustomed to the space.