What are the charateristics of a mammal?

Answer 1

For the typical mammals, the following properties apply:

1) hair on the body

2) endothermic regulation (warm-blooded)

3) milk-producing glands

4) live birth of babies (except egg-laying monotremes)

Answer 2

The two main characteristics are giving birth to live young and being mammalian.

Answer 3

Mammals are warmblooded and reproduce. Mammals do not lay eggs with the exception of the platypus.