More Jaws, More Claws

New discoveries of dinosaur fossils are completely changing what we know about the animals that lived on our planet millions of years ago.

In this unprecedented series, recent scientific discoveries shed new light on the extraordinary prehistory of big cats.

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.

Journey back to primeval Earth in the age of dinosaurs for new findings and puzzling discoveries about their evolution and extinction.

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.

Cats are cute but cunning, the secretive little predators we barely notice as they slink through the shadows. Though big cats may steal the limelight, the little ones have the highest hunting success rates and each kind has carved out its own techniques and niches.

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.

Great white sharks are one of the most feared predators on Earth, and yet we know very little about them. Science is now revealing the mysteries of this perfect predator through evolutionary biology.

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

Recent studies reveal that Tyrannosaurus Rex, once known as the king of all dinosaurs, was actually smaller and weaker. When T-Rex traveled from Asia to Eurasia, then into America, fierce competition to survive forced them to evolve into massive carnivores. Based on latest scientific insights.

Uncover the mysteries of Planet Earth’s super predator: the Tyrannosaurus Rex. Combining the latest paleontological discoveries with cutting-edge CGI, the most scientifically accurate T. rex is born.

There are many ways to defend yourself, you can run, fly, fight, but some animals have changed their entire body plans so they don't have to. Tortoises carry a fortress with them, armadillos can roll into a ball, sunfish have bulletproof thick skin, and echidnas are covered in spines.

Join conservationist Ivan Carter as he explores the planet and seeks solutions to preserve and create balanced wildlife ecosystems.

Meet the world’s most dangerous animals and uncover the traits, behaviors and adaptations that make them deadly in the wild.

Learn how to survive encounters with the world’s most dangerous animals using practical strategies for real-world situations.

Join conservationist Ivan Carter as he explores the planet and seeks solutions to create a balanced wildlife ecosystem.

T-rex -- the "tyrant lizard king" -- ruled the earth 65 million years ago. Today, he reigns as ultimate predator and pop cultural icon. His image is everywhere -- but few know how two scientific rebels probed the mystery of his sudden death, and uncovered the day that shaped the modern world.