What are the requirements for a mammal?

Answer 1

All mammals belong to the class mammalia. What sets out the class mammalia from other classes it that all female are able to produce milk through mammary glands to feed their young and have live birth. Al wells as, both males and females are warm blooded and have hair (humans) or fur (nonhuman mammals).
An animal with lungs. A mammal is a furry animal that is a vertebrate. Their young are born live.
Having a spine, being warm blooded, having hair and giving live birth (although the platypus is an exception to this rule)

Actually there are criteria that is to be considered

1-All mammals have a middle ear containing the three ear bones.

2-All mammals produce milk

3-All There is one a single bone on either side of the jaw

4-Most mammals have hair covering their body (in humans losing body hair and increase in brain size are two related evolutionary feats)

5-Mammals have a one single aortic arch

6-Mammals have a diaphragm
it is a mammal if it has hair covering its body, feeds on milk when new born, and gives live birth(no eggs>with the exception of the platypus).

Answer 2

Some of the things that mammals have are:

warm blood

most young are born alive

every mammal is a vertebrate (has a spine and spinal cord)

mammals feed milk to there young

they are covered in fur or some form of hair.

Read more: Characterics_of_a_mammal

Answer 3

Mammals have special mammary glands in the females which allow them to nurse their young with milk. Mammals are able to regulate their own temperature (warm blooded). They also usually bear live young (except for a small group of mammals known as monotremes). Many mammals have a covering of hair (known as fur) and also three small ear bones to differentiate them from reptiles and birds.

Answer 4

It must have fur or hair, give birth to live offspring, produce milk, and be warm-blooded.

Answer 5

YOU MUST HAVE THESE THINGS TO BE A MAMMAL: 1.Have Hair 2.Breath With Lungs 3.Warm-blooded 4.Produce Milk 5.Most Have Four Limbs 6.Have Backbone 7.Most Give Birth To Live Young

Answer 6

A mammal breast feeds it's young. -Humans, all apes and monkeys, dogs, cats, sheep, cows, all deer, all antelopes, all horses, and many more.

Answer 7

Mammals nurse their babies with milk, so mammary glands would be a requirement.

Answer 8

They must have mammalia (breasts) and give live birth (not eggs).