Opisthocoelicaudia was one of the last Titanosaurs that existed in the late Cretaceous. It lived in herds and traved for miles to eat plants. It would swollow stones that help it to digest there food. Opisthocoelicaudia lay there eggs in places where there is a good insolater. This will help its eggs to hatch, once hatched like all Sauropods, they leave there child until one day will join herds for further protection.