fur noun (HAIR) the thick hair that covers the bodies of some animals, or the hair-covered skin(s) of animals, removed from their bodies: She stroked the rabbit's soft fur.

Common furbearers used include fox, rabbit, mink, leopard, beaver, ermine, otter, sable, jaguar, seal, coyote, chinchilla, raccoon, lemur, and possum.

Hair is an umbrella term for a range of essentially similar structures – fur, wool, whiskers, bristles and lashes – growing from the skin of mammals. That said, fur is widely understood to be the particularly thick hair that covers much of the body.

Hair and fur are chemically indistinguishable, having the same chemical composition, and are made of keratin. The primary difference between hair and fur is the word usage. The hair of non-human mammals refers as “fur,” while humans are said to have hair. So, basically, hair is a characteristic of all mammals.