Because most dinosaurs were so huge, we think of them as vicious meat-eaters roaming the earth in search of prey. Actually, most dinosaurs were completely harmless to other creatures.
Only one dinosaur in 20 was a meat-eater. The rest were vegetarians, eating only plants that they scooped up from swampy water. Some giant dinosaurs didn’t even have teeth!
The largest of all dinosaurs, the Brachiosaurus, was a vegetarian!