Scientists note that Tyrannosaurus rex could have been able to run 32 km (20 miles) per hour over short distances, which is fast enough to chase down prey. Once close enough, it could bite down and through the skulls, pelvises, and limbs of other dinosaurs. Tyrannosaurus rex also may have been a scavenger, and some scientists suggest that bite marks found on the bones of other members of the species could be evidence of cannibalism.