Wool straight off a sheep is known as "raw wool ", "greasy wool " [8] or " wool in the grease". This wool contains a high level of valuable lanolin, as well as the sheep's dead skin and sweat residue, and generally also contains pesticides and vegetable matter from the animal's environment. Bask in the world of wool - discover its diverse sources and versatile uses that go beyond just fashion and comfort. Wool is the textile fibre and animal fibre. It is chemically a bit distinct from the more dominant textile, cotton, which is mainly cellulose. Wool fibre has a highly organized structure. Wool is produced by follicles.We get wool fibres from sheep, goat, angora rabbits, goats, alpaca and even camels.