Brachiosaurus - largest herbivore to ever roam the planet

Brachiosaurus, like all sauropod dinosaurs, was a quadrupedal animal with a small skull, a long neck (emphasis on long: it's head was 30 feet above ground), a large trunk with a high-ellipsoid cross section, a long, muscular tail and slender, columnar limbs. The skull had a sturdy, wide muzzle and thick jaw bones, with spoon–shaped teeth.