Tyrannosaurus

Tyrannosaurus rex was a large theropod dinosaur that lived during the Late Cretaceous Period. It is one of the largest terrestrial carnivores known to date, and arguably one of the most well known of all extinct animals.

Diet
Although no one debates that Tyrannosaurus was a carnivore, scientists do argue over how it gained its meat. Some say that it was the apex predator of its time, and others say it was a slow and bulky scavenger, feeding off the kills of more capable hunters. Although good points have been made for both sides of the arguement, we may never know for sure how this spectacular creature got its food.

Sexual Dimorphism
An interesting fact known about the dinosaur is that, like birds of prey, the female was larger than the male.

Pack Predator?
A major theory in paleontological circles is whether of not Tyrannosaurus hunted in packs. The bones of the theropod are often found in groups of five, complete with young. A pack of tyrannosaurs would certainly be a force to be reckoned with.

If they indeed lived in groups, the females may have taken precedence, much like male lions do today.