1. The hairs form part of the sensory organs of the body
2. They help to maintain the temperature of the body in the mammals.
3. They protect the different delicate part of the body from the attack of different objects.
4. They add to the beauty of mammals especially human beings.
5. The hair of some animals are used as clothing in cold whether.
6. They are very useful in regulating heat loss in mammals.
7. They act as a waste channel through which some waste products are eliminated from the body.
