Triceratops

With its rock-hard horns, shield like head plate, and massive torso, Triceratops must have been an intimidating presence in the late Cretaceous period. But this giant was an herbivore, eating only vegetation of western North America.
Triceratops was roughly 9 metres long and weighed 6 – 12 tonnes.

When threatened by predators, Triceratops probably charged into its enemy like the modern-day rhinoceros does. Triceratops was probably a herding animal, like the other ceratopsians. T-Rex probably ate dinosaurs like Triceratops.