Yes, they have nipples just like humans do, pregnant or not. But the nipples get larger when they are pregnant.
When I was pregnant with my son my nipples got darker.
When I got pregnant I had sore nipples but no flu like symptoms. Now I have the flu/cold and my nipples are sore (im not pregnant).
Nipples become darker when pregnant
The same as your own nipples: she likes to be petted there!
Yes it can. All dogs have nipples, even the males.
no, it doesnt mean she is pregnant. A male and female cats both have nipples. The females use theirs if they ever get pregnant. It is a storage area for milk for when she is pregnant.
No my dog had milk in her nipple but she was not pregnant it was a fake pregnant
The nipples get larger so as to better suckle the baby.