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Canine Pregnancy Formula:
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The Canine Due Date Calculator estimates when a pregnant dog is likely to give birth based on the mating date. The standard canine gestation period is approximately 63 days (9 weeks) from the date of mating.
The calculator uses the standard canine gestation formula:
Explanation: While the average canine pregnancy lasts 63 days, the actual gestation period can range from 58 to 68 days depending on breed and individual factors.
Details: Knowing the estimated due date helps prepare for whelping, schedule veterinary checkups, and monitor for potential complications as the due date approaches.
Tips: Enter the known or estimated mating date. For best accuracy, use the date of the first mating if multiple matings occurred. The calculator will display the estimated due date 63 days later.
Q1: Is 63 days exact for all dogs?
A: No, gestation typically ranges 58-68 days. Smaller breeds often deliver earlier, larger breeds may go longer.
Q2: When should I start monitoring for labor signs?
A: Begin close monitoring from day 58. Take the dog's temperature twice daily - a drop below 99°F usually indicates labor will begin within 24 hours.
Q3: What if I don't know the exact mating date?
A: Ultrasound can estimate gestational age if the mating date is unknown. Early ultrasound (days 21-28) is most accurate for dating.
Q4: When should I contact a vet?
A: If no puppies are born by day 65, or if the dog shows signs of distress, prolonged labor (>2 hours between puppies), or goes past day 68.
Q5: Can the due date vary between breeds?
A: Yes, toy breeds often deliver between 58-63 days, while giant breeds may go 63-68 days.