Question

List five traits that are shared by all mammals, including the two traits that are used to define the mammal class.

Answer 1

A Mammal is normally defined as a warm-blooded animal with a covering of fur, skin or hair which gives birth to live young who are nourished with milk, and who are vertebrate. Mammals also breath through their lungs All mammals suckle their young, but there is a sub-group known as monotremes, which are the egg-laying mammals. This group includes just the platypus and the echidna. They are still mammals because, like all mammals, they feed their young on mothers' milk.
Body hair and mammary glads are the two traits used to define an animal in the mammal classification

Answer 2

Awesome !