Socks Monsters exist on Sock Planet. Sock planet is where all the socks go when the worm-hole in the dryer opens up due to build up of static electricity. Sock planet is the reason you only get 1 stocking at Christmas.
This Monster Eats Socks. This creature has rows and rows of teeth to shred socks. It has a special body that allows it to live on the fiber from the socks.
For larval stage information please check out SockMonster4.