Body: Tyrannosaurus rex was a tall dinosaur. It stood about 18 feet (5.5 meters) tall. Tyrannosaurus rex had a big head with sharp teeth. It had tiny arms, sharp claws, and a long tail.
Habitat: Tyrannosaurus rex lived during the Late Cretaceous Period. It lived about 70 million years ago in woodlands in western North America.
Food: Tyrannosaurus rex was a predator. It spent most of its time hunting. Tyrannosaurus rex was also a scavenger. It looked for dead animals it could eat.
Behavior: Tyrannosaurus rex was a carnivore. It chased animals on its long, strong legs. It killed its prey with big, sharp teeth.
Compare to Today: Alligators have strong jaws for crunching the bones of their prey. Tyrannosaurus rex attacked its prey in the same way millions of years ago.