Tyrannosaurus Rex was one of the largest land carnivores of all time; the largest complete specimen, nicknamed Sue, measured 12.3 meters (40 ft) long and was 3.66 meters (12 ft) tall at the hips, and according to the most recent studies estimated to have weighed between 8.4 metric tons (9.3 short tons) to 18.5 metric tons (20.4 short tons) when alive!
