The cookie cutter shark got that strange name from its habit of biting chunks of flesh from its prey by wrenching its body around in a circular motion after sinking its teeth into a fish too big to eat whole. Ouch! The cookie cutter shark reaches only around twenty inches in length, but has been known to bite into whales, submarines, and people. It has a small patch that fools other creatures into thinking it is a much smaller fish than it really is while the rest of the cookie.