For whoever tagged animal_request, these are Velociraptor. Velociraptor mongoliensis wasn't actually a very big animal.
Its pop culture incarnation is the result of some paleontologists in the 80s believing that its larger relative, Deinonychus, was actually a second species in the genus Velociraptor, and also the discovery of Utahraptor (even larger still, roughly the size of the raptors in Jurassic Park).