Astrodon is a large sauropod that its fossils have been found in around the Washington DC area. It lived in herds that travel up and down Eastern North America. It traveled to eat large amount of food. Its main predator is the Acrocanthosaurus. Despite being its main predator, Astrodon can defend them selves with their tail, and their massive size.
The Utahraptor could also kill it because t's large size enabled it to hunt even sauropods!