Encounter: Floppy-Footed Chömpenmauser, a sort of simple practice monster for dark-lords-in-training to test out their monster-spawning pits. It simply walks forward attempting to bite anything in its path; if it reaches a wall, it turns around and walks back the way it came. Individually they pose little danger to even intermediate adventurers, but get enough of them together…

Source: Dax Norman