She has them, so do male dogs (there are very few male mammals without teats, rats are one of the only species where this occurs). They do become more apparent with pregnancy
Female Rats and Mice have 12 teats.
Male cats do not have functional teats like female cats do. They may have small, underdeveloped nipples but they do not serve a purpose in the same way as a female cat's teats.
No, male pigs do not have teats as they are not capable of lactating. Female pigs, also known as sows, typically have around 10 to 12 teats that produce milk for their piglets.
same reason you have them
a male is stronger
No, bulls do not have teats. Teats are structures that are present in females, used for nursing their young. Bulls, being male cattle, do not have the anatomy necessary for milk production.
The male rats (or mice) used in labs do not usually get neutered.
Female rats don't just turn into male rats. Sometimes a male rat's testes will be withheld in his body as a result of stress and he will appear to be female. Of course in such a situation, he is still male.
Due to the possibility of some male dogs having higher levels of estrogen than others, yes it's possible for a male dog to have teats. It is however mostly unlikely.
Males. Female rats tend to be more active. Male rats tend to get lazy as they mature.
Only male rats have testicles.