Meet Bruce Bruce is a Brachiosaurus. He is the one of the biggest dinosaurs to have ever walked the earth. Go Bruce! Learn what Bruce eats and other fun facts, and play the Bugs and Brachiosaurus Game.Meet Bruce Bruce is a Brachiosaurus. He is the one of the biggest dinosaurs to have ever walked the earth. Go Bruce! Learn what Bruce eats and other fun facts, and play the Bugs and Brachiosaurus Game.