5 Deadly Prehistoric Animals We’re Lucky Went Extinct

Raptors would have made the ideal human hunters: Raptors, smaller and faster than *Tyrannosaurus rex*, could navigate tight spaces and possibly climb trees, resembling modern ostriches. They existed from 145 to 65 million years ago before disappearing after the Chicxulub asteroid impact. Despite their portrayal in media, *velociraptors* were actually chicken-sized and likely not very intelligent.