The human beings serve as replica/model of the mammals.
<u>Explanation:</u>
A mammal is a vertebrate and it has fur, mammary glands (female) and feeds the young ones with milk, a neocortex (region of the brain) and three middle ear bones. This differentiates them from reptiles and birds.
All mammals are 'warm blooded' because the body temperature heats the blood.
A few mammals like the platypus lay eggs. The mammals are at the top of the food chain.
