What distinguishes one dinosaur from another? • Learners might be surprised to find out that only about 35% of dinosaurs are believed to have been meat-eaters. The other 65% primarily ate plants. • Some dinosaurs walked on two legs, others on 4 legs. • They varied in size from about the size of a crow to the largest creatures known to have ever existed on earth. • Some dinosaurs had very short front legs. • Many other characteristics distinguished them, including the length of their necks a