Giganotosaurus, jee guh NOH toh sawr uhs, was one of the largest meat-eating dinosaurs that ever lived. It weighed approximately 8 tons (7.3 metric tons), measured about 45 feet (14 meters) in length, and stood about 15 feet (4.6 meters) tall at the hips. Its skull grew over 5 feet (1.5 meters) long and had huge teeth.