Tyrannosaurus

Tyrannosaurus rex is a species of theropod dinosaur that lived during the Late Cretaceous.

Two T-rexes attacked Craig Dylan during the events of Jurassic: The Hunted, one green and one red, in the chapter "The Tyrant King". The green one was killed by Spike during the chapter "Spike".

Description
Tyrannosaurus was a bipedal carnivore with a massive skull balanced by a long, heavy tail. Compared to the large and powerful hind limbs, Tyranosaurus ' forelimbs were small, and bore two clawed digits used for holding struggling prey to be dispatched by the massive jaws. It was one of the largest known land predators that roamed the Earth.