Wool
Wool is the hair of certain mammals.  Most wool comes from sheep and goats, but wool is also taken from camels, llamas, and special rabbits.  Wool is a natural material.  People use wool fiber to make clothing, blankets, and other things to keep warm.  It is usually used to make outer clothing but is also used to make blankets, socks, sweaters and fine clothing.  Rabbit wool is called angora wool.  Cashmere and mohair come from goats, qiviut from musk oxen, and other types of wool from camelids.