Dinosaur Revolution

The world of the dinosaur is a tough and dangerous one. Remember the ferocious Velociraptors made famous by "Jurassic Park?" Watch as bigger versions of them, Utahraptors, take down larger prey by hunting in groups. It takes revolutionary adaptations to stay alive during the era of the dinosaur, and this episode exposes how different species changed to survive. See how a smaller version of the Utahraptor, the Rahonavis, used its special ability to run up trees to evade predators. In the skies, a young pterosaur - a flying reptile - uses flight to evade its enemy. Also showcased will be the radical discovery that mammals were much more diverse at an earlier time than previously thought. You'll see the unusual Castorocauda, a beaver-like animal, and the Volaticotherium, an animal similar to a flying squirrel - mammals who shared the earth with dinosaurs during their reign. And an orphaned Protoceratops - a cousin to the more famous Triceratops - finds safety in numbers when it joins up with a group to fight off predators.

Gigantic and menacing, the Tyrannosaurus Rex is probably the most famous dinosaur that ever lived. However, new discoveries are proving wrong the previous depiction of the T.Rex as dull and slow - in fact, he was complex, dynamic and even bird-like. We get up a close and personal look at how they lived, from nesting in pairs to caring for their young and how they played together. The reign of the T.Rex ended when the impact of a huge asteroid hurtling toward Earth decimated the dinosaur population — but not all dinosaurs died. A few survivors such as Troodon, a small, bird-like dinosaur and the smartest dinosaur to ever live, may have hung on, yet eventually it, too, succumbed to the catastrophe. Watch as a lone Troodon — "the last dinosaur" — struggles to survive in a post-apocalyptic world. But our Troodon may not really be the last dinosaur. If birds are their descendants, then we're still living in the Age of Dinosaurs — and the DINOSAUR REVOLUTION continues.