Really big bloody reptile thing that used to live a long long time ago and they ate eachother and said "rawr!". Sometimes there were boring dinosaurs that were small and/or ate plants because they sucked. However some of them could fly and stuff, which was awesome. They also said "rawr".
Dinosaur 1: "I am going to eat you all up! Rawr!"
Dinosaur 2: "Oh no!"