This extinction animal is T-Rex. T-Rex or Tyrannosaurus Rex. It lived in North America during late Cretaceous period, some 68-65 million years ago. T-Rex is the huge predator dinosaur with small arms and two-fingered hands. It has 13 feet tall and 40 feet long. It weighed is about 9 tons.
T-Rex hunted for its meal. It has very strong and long tooth. The largest tooth of T-Rex ever found was 12 inches long. It ate herbivorous dinosaurs, including Edmontosaurus and Triceratops. Sometimes T-Rex ate each other
At the end of Cretaceous period, all dinosaurs died out and also T-Rex. No one know why but the scientists suggests that it was due to climate change. The climate at the end of the Cretaceous was cooling – and a fall in sea level reduced dinosaurs and shallow water marine animal habitats.