Natural fibers mostly made from mammals hair
Animal fibers are natural fibers that consist of particular proteins. Instances are silk, hair/fur and feathers. They are mostly taken from mammals such as sheep, goats and rabbits with well-known examples such as alpaca, merino, wool, fur and mohair. Animal fibers have different properties, even within a species. Individual animal or natural fibers look different, whereas all synthetic fibers look the same. One eco innovation in animal fiber is the production of cruel-free silk or peace silk.