How many velociraptors would it take to kill a T-rex?

Real velociraptors? The size ratio between a T. rex and an actual velociraptor is similar to the ratio between a human and a chipmunk or small squirrel. read more

Well, Velociraptor and Tyrannosaurus rex did not coexist. Velociraptor lived in Mongolia 80 million years ago; Tyrannosaurus lived 66 million years ago in the western US and southern Canada. read more

Just one Velociraptor could probably kill a human (I am assuming a large, 50 pound raptor and a human male of about 180 pounds), but it would have to ambush him. If the raptor grabs the human in the neck with its sickle claws, game over. But I doubt that Velociraptor would target such large game solo. read more