What makes a polar bear a mammal?

Answer 1

A polar bear is a mammal because it fits all of the characteristics that define mammals. It is warm-blooded, has hair, has three bones in the middle ear, a neocortex in the brain, and mammary glands that it uses to feed its young.

Answer 2

It has hair, gives birth to live young, maintains its own body temperature, and the female gives milk to its young.

Answer 3

It has hair, a backbone, has it's young alive and nurses them. That makes it a mammal .

Answer 4

Because grizzly bears have hair/fur and female animals have mammary glands.

Answer 5

Well a polar bear is a bear that lives in the north pole.

Answer 6

A polar bear is a mammal and an animal.