The most obvious answer would be because it is a pregnant bitch. If she is not pregnant, she could have recently had a heat cycle or be nearing the period when she is in heat. Her hormones make the nipples protrude and swell more than normal, changing their shape, hardness, and texture slightly.
it could be a sign of pregnancy or just tig ol bittys
yes, my dog has nipples
Nipples. Not Nibbles. Nipples. A dog has eight to ten nipples.
Like a female dog. Think before you answer, you pervert. Stop staring at dog's nipples.
Yes, they have nipples just like humans do, pregnant or not. But the nipples get larger when they are pregnant.
What do i do for my dog, i think she's in heat but don't know for sure but her nipples are dry and bleeding?
Your dog has her period.
Usually when a dog has milk in it's nipples, it's after being pregnant and provided for feeding the their babies
It's based on the number of nipples each parent has
It would have nipples if it was very fat