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?
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.
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.
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.
The teratorns were the largest birds to ever fly across North America. Scientists study their bones to determine how they were capable of hunting live prey.
