Because they give birth to live young and nourish them on teats.
Dogs are classified as mammals.
Dogs and cats are both mammals, and they are also both in the same class 'carnivora'
No. Platypuses are not related to dogs in any way, except for the fact that both animals are classified as mammals.
They are classified as mammals.
Whales have tiny hairs on their backs, and mammals have to have hair to be classified as mammals, and fish CAN NOT have hair.
Mollusks are not classified as mammals.
Yes, a Pit Bull Terrier is a warm-blooded mammal from the canine family.
Yes. They are Dogs and dogs are mammals.
Egg laying mammals are classified as monotremes. They belong to the order monotremata.
mammals
Yes, bats are mammals.
They are, but they are classified as mammals. Humans are mammals, too.