Why you should check out The Sinner, The Good Place, and more
Carnivorous animals of the past are examined.
Season 1, Episode 5
October 12, 2009
Examining the carnivorous hyaenodon, an ancient mammal originally believed to be related to the modern-day hyena, although some evidence suggests otherwise.
Season 1, Episode 4
A look at the extinct entelodont, a vicious omnivorous species that is a distant relative of the modern pig.
Season 1, Episode 7
April 28, 2009
A look at the megalodon, an ancient shark that's estimated to have been more than two times the size of a great white, its closest living relative.
Season 1, Episode 2
Examining terror birds, giant predators that dominated South America five million years ago.
Season 1, Episode 3
September 15, 2007
The short-faced bear, a powerful North American predator until about 10,000 years ago, when it was killed off by the most recent ice age, is examined.
Season 1, Episode 6
August 19, 2007
Examining the extinction of the dire wolf, the largest wolf known to ever exist, and why its smaller, weaker relative, the gray wolf, survived.
Season 1, Episode 1
A prehistoric relative to Africa's lion, the sabertooth cat, which dominated the American landscape until it mysteriously became extinct, is examined.
Show More »
Download the TV Guide app for iPhone, iPad and Android!