The allosaurus lived 150 million years ago in the Jurassic period. This dinosaur was a fearless meat eater. Its teeth was just like a VERY sharp knife. The allosaurus tore its meal. They also ate dead animals.
Scientists have found at least 44 allosaurus counting their babies. Scientists still haven't found out if the allosaurus hunted in packs or by themselves. This dinosaur sometimes killed dinosaurs twice their size .
Sometimes they would steel other dinosaurs meal such as meat. Sometimes 2 allosaurus would jump on top of a barosaurus' back for food. The barosaurus was a plant eater or a herbivore.