An extremely shy creature that climbs out of the lair only at full moon. He has a smooth light gray body, round bulging eyes on the scalp, and four spider legs with huge flat feet. In the light of the moon, intricate dances work on their hind legs (Muggles then explore intricate patterns in a field of grain and are still an unsolvable mystery to them). It's a fascinating sight and the silvery dung useful before sunrise on magical herbs will increase their yield and magical power.