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How to determine the best breeding time for a female dog in heat?

Updated On September 23rd, 2025

Pet's info: Dog | American Pit Bull Terrier | Male | 3 years and 6 months old | 70 lbs

Hey my female bully been in heat for 8 days now when is the perfect time to breed her

1 Answer

Most Helpful Answer

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Answered By Jenna Beyer, DVM, MBA, cVMA

Veterinarian, Certified Veterinary Acupuncturist

Published on September 18th, 2017

Typically, female dogs can be bred on days 9-14 after the start of their cycle. Since it can be very difficult to know the very first day of the cycle, I would recommend progesterone testing with a vet to know the appropriate timing. Alternatively, you can allow the male to breed her when he is ready, since they often know the perfect time.

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