*Prototype.Jurassic Park InGen Files:
Late Cretaceous Diet:
Around 12 meters long when full grown.
Notes: EXTREEMLY DANGEROUS
Tyrannosaurus rex is one of the most well-known of all dinosaurs. It is no longer considered the largest of the theropods, with only Spinosaurus being ahead of it, but it is certainly the most powerful. Tyrannosaurus had very short arms with only two fingers. Although these were probably useless while hunting, its jaws were not: Tyrannosaurus has an enormous skull armed with teeth the size of steak knives. Unlike the teeth of most meat-eaters, tyrant dinosaur teeth are very thick and capable of crushing bones. The skull and neck bones show that T. rex had the largest neck muscles of any meat-eating dinosaur.
Tyrannosaurus Rex is capable of running as fast as 32 mph. They display some sexual dimorphism as adults. Males have more prominent brow ridges than females. Males also have a tendency to have visible facial scaring (probably due to battles over territory with other T. rex and carnivores or mates). Females are also lighter in colour than males, and are slightly bigger.
Males are slightly smaller than females, and are darker in colour. They also have a large throat pouch that females seem to lack. Males are typically green, while females are typically brown or grey.
Alan Grant states that the sight of Tyrannosaurus rex is based on movement, so if you don't move the animal won't see you. Dr. Grant used this knowledge to escape from the T. rex on Isla Nublar. Grant based this on papers by palaeontologist John Roxton wrote an article in which he stated that the brain of the Tyrannosaurus was very similar to that of frogs. Therefore, Roxton concluded that T. rex‘s sight was based on movement. As Grant had no expertise in brain anatomy he accepted the conclusions of the article. Supporting this theory is that the Tyrannosaur gives a loud roar to scare its prey into revealing their position by running away. The T. rex may then make the kill.
Tyrannosaurus is shown as being a protective parent. Tyrannosaurs are shown to pair off during mating, and both parents will remain with their offspring during its growth, exhibiting very powerful parenting and protective instincts, going to great lengths to ensure an infant's safety.
Tyrannosaurs are territorial by nature, and will attempt to drive away anything that might be deemed dangerous, whether animate or not. They are known to be efficient parents, with both male and female keeping close guard over infants and bringing them food for a considerable matter of months. They will ferociously defend their offspring during this stage from predators and humans, and will even travel far outside their native territories to find them if they get lost. Like most predators, they presumably teach their young how to hunt once the time comes.
Two Tyrannosaurs were present on Isla Nublar; one adult and one juvenile, although there was no interaction between them. The Tyrannosaurus had a sensitive skin, and therefore sought shelter from the sun under the canopy.
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