The Tyrannosaurus rex weighed 5 to 7 tons. He was a fierce and powerful meat-eater, up to 40 feet long and 15 to 20 feet tall. The skull was about 5 feet long, with 4-inch eye sockets and 3 inch eyeballs. The arms were about 3 feet long. His feet were about 3.3 feet long, but he left footprints only 1.55 feet long because like other dinosaurs, he walked on his toes. His stride length was 12 to 15 feet. His jaws were 4 feet long and he had 50 to 60 cone-shaped, bone-crunching teeth that varied in size up to 9 to 13 inches long. T-rex could eat 500 pounds of meat and bones in one bite.