Although I am deathy afraid of just the little ones, these are just too cool. They can get over a a foot long. I saw some thing on Animal planet about giant Centipedes, and man are these things mean creatures. They move really fast and they seem to be very agressive. The camera guy was almost running from it. Anyways i'm thinking of asking a pet store to order one for me mabey. I might be freaked out having one of these though, I mean what if it got loose?