Diplodocus is a large sauropod that lived in Jurassic North America. It lives in large herds most of there lives. But at first Diplodocus live on there own, They are laid in large groups of eggs. The parents leave there eggs alone, the eggs hatch into the world and have to fend from the start. Hiding in the forests of the Jurassic until they are big enough to join the herd. Diplodocus do not eat from the top plants in the forest, but eat the low growing plants.