My spider corkscrews. At first it kind of freaked me out because when we first got him he didn't do it that much but now when he gets excited (feeding time or right after handling). It's very interesting to watch. He misses food a lot but I have to dangle it in front of him as he wont eat the f/t rat if it's laying on the "ground". He is an amazing eater though, only misses a meal when he's deep in shed.