Allosaurus is a genus of theropod dinosaur that lived around 155 to 145 million years ago, during the Late Jurassic period. It was one of the largest meat-eating dinosaurs of its time. Allosaurus had a long, slender body with strong legs and a massive head. It could grow up to 39 feet long and weigh up to three tons.

Allosaurus was a powerful predator with sharp, serrated teeth designed for cutting through flesh. It had long, clawed fingers that it used to grab and hold onto its prey. The jaws of Allosaurus could open wide, allowing it to take big bites. It is believed that Allosaurus used its strong legs and tail to support its body and move quickly to catch its prey.

Allosaurus was at the top of the food chain and would have hunted other dinosaurs, including herbivorous dinosaurs like Stegosaurus and Diplodocus. It is thought that Allosaurus may have been a solitary hunter, but it is also possible that they hunted in packs.