If an animal breathes air through lungs and its babies feed on their mother's milk it's a mammal. Most mammals have some fur or hair on their bodies .
ALL dogs have lungs.
yes some do if they are lazy (really lazy) then yes they will
Dogs breath through their mouth and nose using their lungs.
yes
Yes. Dogs get oxygen through their lungs by inhaling just as we do. All mammals do.
Dogs do not have gills. Dogs have lungs instead.
Dogs have lungs.
Yes.
via their lungs
A lot. Dogs, Cats. Almost all animals have lungs.
because there lungs are contracting and uncontracting
Well, they have these convenient little things called lungs. *facepalm*