I really LOVED "Walking with Prehistoric Beasts," and cannot recommend this documentary enough! This show will appeal to fans of nature documentaries who would like to view a researched but (fictional) account of the lives of ancient mammals. This series starts off at about 65 million years ago with the demise of the dinosaurs, and ends about 30 million years ago, with the demise of the Neanderthals. The animation and animatronics are so well done, so detailed that at times I forgot I was watching computer animation and animatronics. In particular, I loved the scenes with the saber-toothed cats, the hyeanadons and the ancient whales. Oh, and who can forget the andrewsarchus?
The narrator does an excellent job of describing each era, the animal life, the flora and fauna, and the climate change and how it impacts the animal populace. Creatures spring to life on the screen eating, drinking, fighting, dying, and yes even (mating).
Caveats: First: I wish the documentary had gone into a bit more detail with early homo sapiens and Neanderthals. I felt the impact of these early humans on their environment wasn't fully explored. Second: About the only scenes I saw where the animation was left than perfect, was where/when the animals fed. The chewing and eating motions didn't seem quite right. The early chimp-like humans were picking nits. But the nits never seemed to quite make it INTO the mouths. Etc.
Finally, one word of caution, while this did not bother me, some sensitive viewers and young children, might have trouble with repeat scenes of graphic violence, and animal death. Even though its animation, it is very realistically portrayed and no punches are pulled. This is not a movie intended for young children( although mature children will love it). As an example: my mother was quite distressed at the scene in the beginning where the trapped baby chick was being devoured alive by the giant ants (!) As a result, she refused to watch anymore.
Overall, an excellent film, sure to delight those who enjoy speculating on what things were like in the world of prehistory.