Thanks to the first three Jurassic Park movies--not to mention the upcoming blockbuster Jurassic World-- Velociraptor is one of the world's most well-known dinosaurs. However, there's a huge difference between the Hollywood version of Velociraptor and the less imposing one familiar to paleontologists. you may or may not have known about this surprisingly small, but surprisingly vicious, predator.It's not nearly as well-known as its Asian cousin, Velociraptor, which it played in the first Jurassic Park movie, but Deinonychus is far more influential among paleontologists--and its numerous fossils have shed valuable light on the appearance and behavior of raptor dinosaurs.