Although the onset of puberty varies from breed to breed, pet parents can expect their female dog to experience her first
estrus around 6 months old.
Not exact matches
This process is called
estrus, or heat, and typically begins
around six months of age.
However, when a female dog is nursing puppies, her body is technically undergoing
estrus — so if a male comes
around, she can become pregnant again.
Some veterinarians say that the intervention can only be performed when the female dog is
around 5 or 6 months old, before the first appearance of the
estrus cycle.