MAMMALS

The mammals are a class of vertebrates with hair. The majority are viviparous.

There are 5487 different species.

The science that studies the mammals calls Teriologia. 

The human beings also we are mammals.

His traffic is double and completes.

They have constant temperature, that is to say, they are of warm blood.

The herbivores cut the grass with the incisors very rapidly without chewing.

The flyin mammals like bat have wings and ears.The lethargic winter  happens,

eats insects.