Because they nurse their young, as all mammals do. They share other characteristics most mammals have: they are warm-blooded, vertebrates, have hair or fur, give birth to live young, and feed their young milk.
The give live birth and nurse their young are two reasons
They are mammals.
Mammals.
Yes. They are mammals.
As elephants are mammals, and all mammals are vertabrates (ie. they have a backbone), then yes, they do indeed have a backbone.
Neither. Elephants are placental mammals, which form a different group of mammals from either the marsupials (pouched mammals) or the monotremes (egg-laying mammals).
No, elephants are not marsupials. Elephants are considered placental mammals.
Elephants are mammals and are warm blooded.
No. No males of a species has babies. Elephants are mammals.
Yes
Yes
No elephants are mammals.
Cows, elephants and whales are all mammals.