Almost all silk fabric is made from silkworm moth cocoons, but people have occasionally tried to make cloth from spider silk. One of the biggest challenges is the cannibalistic nature of spiders, which makes it very difficult to raise them in captivity, unlike silkworms. Spiders can be collected in the wild and then placed in a device to keep them still so the silk can be drawn. Afterwards, the spiders are released back into the wild."

— Spider Silk | American Museum of Natural History