Brachiosaurus is a gigantic dinosaur. His name means "Armed Lizard". This herbivore with long neck, could reach 82 feet long and a weight of 30 tons, 6 elephants !! His neck measured up to 33 feet high, the equivalent of a 4-story building. The Brachiosaurus, the largest herbivore among the dinosaurs, could therefore graze the ferns on the ground as well as reach the treetops. He ate more than a ton of plants a day. It was built massively, so seemed very robust but a bit slow. Unlike other dinosaurs, her front legs were longer than her hind legs.