Woche der Kiefer und Krallen

When science and film team-up to explore the Einsteins of the oceans.

The Tyrannosaurus Rex is known as the king of the dinosaurs, but how did its reign begin? Meet Moros Intrepidus, a 180 lb., deer-sized ancestor to the T-Rex. Learn how the latest in paleontology can now link this small dinosaur to the 19,000-pound Scotty, the largest T-Rex ever discovered.

By examining countless Megalodon teeth from around the world, scientists have concluded that "meg" was able to achieve its gargantuan proportions by starting its carnivorous diet early -- in the womb.

Capture teams from the U.S. National Park Service track down and relocate wolves to Isle Royale National Park in Lake Superior under an ambitious initiative to restore balance to a wilderness ecosystem.

Lions may be known as the kings of the jungle, but it was saber-tooth cats that ruled over the Americas. New fossil evidence is shinning a light on the violent lives of these mysterious species.

Join filmmaker Casey Anderson as he embeds in the Alaskan wilderness to follow the largest terrestrial carnivores in the world.

Wiped off the face of the Earth by humans nearly a century ago, geneticists are now working on resurrecting the enigmatic Tasmanian Tiger.

Go behind the scenes of wildlife filmmaking and join Andy Casagrande, as he gets up close and personal with some of the most iconic sharks.