Tyrannosaurus rex means "Tyrant lizard". it is often abbreviated as T-Rex. T-rex is the most popular dinosaur and is called the king of Dinosaurs. here are some facts that make T-Rex the undisputed leader of Dinosaurs. 1. It was the biggest known meat eater that ever existed. while bigger carnivores have been discovered, it is still the fiercest. Favourite meal: Triceratops and Edmontosaurus! 2. It was over 40 ft long and 15-20 ft tall. Trex had the biggest head of any dinosaur. [The text is the video incorrectly says 40ft tall] 3. It had the biggest and sharpest teeth. Trex is known to have had the strongest bite! one bite delivered 57000 newtons force! #trexfacts #trexvideo #dinosaurfacts #dinoworld #dinosaurfans #king #dinossauros