A massive Hyaenodon wreaks havoc, its razor-sharp jaws snapping shut with deadly accuracy, leaving a trail of victims in its wake.
Aired: Aug 19, 2007The extinction of the Dire Wolf remains a baffling mystery, with scientists s...
Aired: Aug 19, 2007A pioneering research project sheds light on the remarkable link between the ...
Aired: Sep 15, 2007The next episode delves into the mysteries of the short-faced bear, a colossa...
Aired: Apr 28, 2009Terror Birds reign supreme in South America, their razor-sharp beaks deliveri...
Aired: Apr 28, 2009A massive 50-ton Megalodon shark, boasting a 9-foot jaw and 7-inch serrated t...
Aired: Oct 12, 2009A massive Hyaenodon wreaks havoc, its razor-sharp jaws snapping shut with dea...
Aired: Oct 12, 2009Next episode: Uncovering the behemoth "Killer Pig", a 4-foot-wide and 1,000-p...
Current Status: Ended
Network: National Geographic
Production Country: United States
Genres:Animation, Documentary, History
