How Many Nipples Does A Female Dog Have?
Female dogs, in general, have 6 to 10 nipples divided into two rows. The numbers may vary a little bit, but that is absolutely normal. There is symmetry in numbers on either side mostly. So again, if not, there is no medical concern.
The number is independent of gender, health, or breed of your dog. For example, when a dog enters pregnancy, the mammary glands around the nipples get swollen and prepare for milk production. In the case of some female dogs, the mammaries remain protruded after having birthed multiple litters. In other cases, they may return to their previous flat state.
The swelling of the nipples in the case of female dogs may occur due to heat cycles. With spayed dogs, nipples can appear enlarged and protruded even without birthing any litter.
How To Differentiate Between A Female And A Male Dog?
Their nipples cannot determine the sex of puppies. Both the genders have nipples, and physical distinction is pretty much impossible until your dog reaches heat or gestation period.
As puppies, genitalia is the only way of confirming the sex of a dog.