Question

why do some animals have hairs on their bodies ​

Answer 1

Answer:

Mammals are warm-blooded, which means that we require a high internal body temperature to survive. Very few animals other than mammals are warm-blooded. ... A layer of hair or fur even as thin as the hair on our arms can trap air and create an insulating layer between our skin and the colder temperatures outside.

Answer 2

Answer:

to protect from extreme cold as well as hot climate..