The Brachiosaurus had front legs that were much longer than its back legs. The Brachiosaurus was an herbivore with a very long neck and long front legs so that it could easily access its food from high places in trees. The result of its build was that it had a steeply inclined body with all of its height in its front area. The neck and front legs were very long serving to help it better access its food while the back legs and tail were much shorter in proportion.
The Brachiosaurus lived primarily in North America in western Colorado and is speculated to have been the largest dinosaur that existed. Its long neck, small skull, and large oversized body were all common traits of the sauropod class it belonged to.