Dinosaurs ruled the Earth millions of years ago, and while many were peaceful herbivores, others were some of the most dangerous animals to ever walk the planet.

Here are the most dangerous dinosaurs and what could have made them a threat, according to Morrison. This dinosaur was a herbivore, but it had fierce tools to defend itself. "It has like a really ...

Rex or other large dinosaurs in Jurassic World 4. They wouldn't be as big as T. Rex, but their co-operation would make them ...