VETWEST says:: "Puberty or sexual maturity in the female dog usually occurs around 6 months of age. The smaller breeds tend to go into oestrus or "heat" earlier & some females can have their first "heat" cycle as early as 4 months of age. On the other hand, the large & giant breeds can be up to 2 years old before they come into heat for the 1st time." REF: https://www.vetwest.com.au/pet-library/reproduction-in
Answered 5/17/2020
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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