Diplodocus

The Diplodocus is a giant in the prehistoric world: it is 29 yards long, with its neverending neck alone measuring up to 20 feet. As if that weren't enough: It weighs up to 32,000 pounds. Not bad for a vegetarian! With its wide mouth, it has to spend hours laboriously chewing at branches until it has finally had its fill. It certainly keeps him out of trouble!