Prehistoric Predators - Season 1 (2007)

South America became home to creatures found nowhere else on Earth--Terror Birds. Capable of killing large prey with a single blow from their massive beaks, they were the only birds ever to become top predators on an entire continent.

The Megalodon was a ferocious 50-ton shark with a 9 foot jaw and 7 inch serrated teeth terrorized the creatures of the seas. Nearly 2 million years after its extinction, a team of scientists attempt to unlock the mysteries of this apex predator.

Hyaenodon created a reign of terror by just using its head. Its powerful, razor sharp bite could dispatch a prey animal within seconds and left a mark in history that will never be matched.

At four feet wide and 1,000 pounds, the Killer Pig was a prehistoric battle tank that dominated the North American landscape. Learn how the killer pig was an evolutionary success, despite its eventual extinction.