T. rex was a big dinosaur that ate meat. T. rex could be about 40 feet long. It stood about 13 feet tall at the hips. A grown T. rex could weigh about six tons, like an elephant.

T. rex had about 60 teeth. T. rex teeth were replaced when they fell out. A T. rex skull could be five feet long.

T. rex had a bite strong enough to crunch bones. T. rex ate big plant-eating dinosaurs such as Triceratops and Edmontosaurus.

T. rex had very small arms for its big body.

T. rex had a very good sense of smell. T. rex had large eyes and could see very well.

T. rex grew very fast when it was a teenager.

Sue is a famous T. rex skeleton that you can visit at the Field Museum in Chicago. Sue was found in South Dakota in 1990. Sue is named after Sue Hendrickson, who found the skeleton. Sue was 28 years old when she died. Sue is about 13 feet tall at the hip and more than 40 feet long.

T. rex fossils have been found in both the United States and Canada.

T. rex lived more than 60 million years ago. A giant asteroid hit Earth about 66 million years ago, and T. rex and the other big dinosaurs died out.

Words to know

• skeleton: all the bones
• teenager: a young person