Back in the 1800s, composer Franz Liszt was worshiped like a rock star. In fact, he received so many requests for locks of his hair that he eventually bought a dog, only to snip off patches of its fur to send to his admirers.

50 beavers were introduced into Tierra del Fuego, Argentina, in the 1940s to help start a fur trade. There are now over 100,000, and they have devastated over 16 million hectares.

The fur of the vicuña, a small member of the camel family which lives only in the Andes Mountains of Peru, is so fine that each hair is less than two-thousandths of an inch thick. The animal was considered sacred by the Incas, and only royalty could wear its fleece.