igongosaurus was a large quadrupedal (walked on four legs) herbivore. It was a about 35 feet (10.7 m) long and may have weighed about 20 tons. It had a long neck, a long tail, a small head with spoon-shaped teeth, and thick, elephant-like legs. Zigongosaurus lived during the late Jurassic period. Zigongosaurus was an herbivore, a plant eater. It stripped foliage with spoon-shaped teeth. It used to be thought that the sauropods (like Zigongosaurus, Brachiosaurus and Apatosaurus) and Stegosaurus had a second brain.