Imagine a National Geographic survey of a natural world that hasn't existed for millions of years. The sequel to the mesmerizing Walking with Dinosaurs, one of the most imaginative explorations of the prehistoric world ever made, once again uses state-of-the-art technology to re-create the "menagerie of weird and wonderful creatures" that roamed the globe after the dinosaurs. The death of the dinosaurs did not of course mean the demise of life on Earth... the bizarre beasts who followed adapted and evolved in the fiercest climate extremes the world had ever seen, becoming the forerunners of the animals we know today.In this unique 90-minute presentation of Walking With Beasts, we watch them walk, hunt, breed and fight their way towards the rise of the mammals and mankind itself. Come face to face not just with the familiar woolly mammoth, but a five-foot long wolf-like creature who involves into the whale, a carnivorous pig and a horse no bigger than a cat. We also meet the ape-like humans - tree living and social but the favoured prey of saber-toothed cats with teeth the size of carving knives.