DENDROLOGY

Detailed explanation-1: -Mammals have fur or hair that covers their bodies. It helps keep them warm and dry. Lots of mammals have fur that helps them blend into their surroundings to help them hide from predators, too.

Detailed explanation-2: -The most important function of hair in mammals is that of insulating against cold by conserving body heat. The differing colours and colour patterns in hair coats can also serve purposes of camouflage and of sexual recognition and attraction among the members of a species.

Detailed explanation-3: -Mammals are the only animals that have hair. It grows from the outer layer of the skin. A dense covering of hair is often called fur or wool and insulates. Glands in the skin release oils which help to keep the fur waterproof and protects against rain and cold.