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The size of the tyrannosaurus rex is impressive. 12 meters in length, 4 meters in height in its thigh, and about 7 tons in weight. The huge skull, seated with dozens of long teeth, could be 1.5-2 meters in length and fully fit a person into itself. The teeth of a tyrannosaurus rex are the absolute record holders among the teeth of all land predators. The length with the root reached 30 cm. Even the hypertrophied upper fangs of saber-toothed Smilodons were, albeit a little, but shorter.
The bite strength of a tyrannosaurus rex is many times greater than all modern predators. Of course, its reconstruction is not ideal and there will be more recalculations, but today we have impressive figures: 250-300 kN. This makes the jaws of a tyrannosaurus rex one of the most powerful land animals in history.
The question of whether Tyrex was a hunter or a scavenger is still unresolved. But the set of progressive features of the tyrannosaurus rex is increasingly persuading paleontologists to a hunting lifestyle. Rex has well-developed binocular vision. Binocular vision is the ability to focus on an object with both eyes, which gives a more accurate estimate of distance. This vision is more characteristic of active hunters than scavengers. The part of the brain of the tyrannosaurus rex that is responsible for the sense of smell is also well developed. It can be said that this is common for scavengers, but all carnivores have a good sense of smell: both fall lovers and excellent hunters. Also, a tyrannosaurus rex has a strengthened jaw and deep-set teeth. Remarkably, the jaw has additional mobility relative to other tyrannosaurids, which provides increased stability under lateral loads. This adaptation is also more suitable for a hunter of large animals than for a scavenger, whose food does not resist and cannot damage the jaw. The jaws and teeth of a tyrannosaurus rex seem to be specially designed to hold a resisting multi-ton victim. A tyrannosaurus rex with its weight, of course, could not run after the victim, which is confirmed by recent studies, but it was quite able to track down. However, the tyrannosaurus did not need to run: its main diet was slow triceratops and hadrosaurs with a U-turn angle like a train. This is evidenced by lifetime bite marks of giant jaws on the collars and tails of the victims.