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Pregnancy Test Timing Formula:
DD (due date), MD (mating date)
Test timing based on due date.
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The Puppy Pregnancy Calculator estimates the due date (DD) based on the mating date (MD) using the standard canine gestation period of 63 days. It also provides optimal timing for various pregnancy tests.
The calculator uses the simple formula:
Where:
Explanation: The average canine gestation period is 63 days from mating, though normal range is 58-68 days.
Details: Knowing the exact due date helps prepare for whelping, schedule prenatal care, and determine optimal times for diagnostic tests.
Tips: Enter the confirmed mating date. The calculator will show the due date and recommended test dates for ultrasound, relaxin testing, and x-rays.
Q1: How accurate is the 63-day gestation period?
A: While 63 days is average, normal range is 58-68 days. Smaller breeds often deliver earlier, larger breeds later.
Q2: When can pregnancy be confirmed?
A: Ultrasound can detect pregnancy as early as 25 days, relaxin test at 28 days, and x-rays show skeletons after 45 days.
Q3: What if I don't know the exact mating date?
A: Use the earliest possible date and monitor for signs of pregnancy. Progesterone testing can help narrow the window.
Q4: Should I adjust for multiple matings?
A: Dogs can conceive from multiple matings over 2-3 days. Use the last known mating date for calculation.
Q5: What are signs of impending labor?
A: Temperature drop (below 99°F), nesting behavior, loss of appetite, and restlessness typically occur 12-24 hours before labor.