T-Rex Took 40 Years to Reach Full Size: Study

Scientists studied the bones of Tyrannosaurus rex and found that it took about 40 years to grow to its full size of 8 tons.

This is much longer than previously thought.

The study also showed that T-rex had flexible growth patterns, growing more in good conditions and less in harsh times.

This helped it survive and compete for food.

T-rex lived in western North America during the time of the dinosaurs and was one of the largest land predators ever.

It had a strong bite, two strong legs, and small arms with two fingers.

Scientists think T-rex lived up to 50 years and ate other dinosaurs like Edmontosaurus and Triceratops.