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.
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.
A scientific study into the physiological and sociological life of the Saber Tooth Cat. Particular focus is placed on the unique purpose, and ironic consequences of it's 7 in long canine teeth.
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 short-faced bear was twice the size of a grizzly and could outrun a horse. It roamed North America for almost 1 million years-then faded into extinction. See how this mighty creature lived, hunted and vanished.
The Dire Wolf, a fierce and powerful alpha predator in the savage ice age, was larger and more powerful than any modern-day wolf. Why did it suddenly perish while the smaller, weaker Gray Wolf survived?
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.