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for such applications as body armor, parachutes and rope. Genetically engineered goats have been raised to produce spider silk in their milk at a cost of around $1,500 per gram.

Wool

Wool is fiber derived from animal fur. Sheep are the principal source of wool, but fiber made from the hair of other mammals, such as alpacas, and rabbits, may also be called wool.

Alpaca

Alpaca fiber

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