of ensuring that as much inferred behaviour as possible of each animal was showcased in the series. In the end, each episode of Walking with Beasts ended up with a different type of story. Next of Kin (episode four) for instance follows a group of Australopithecus going through rough times and Land of Giants (episode three) follows a young Indricotherium for the first few years of its life. Details of the plot and how animals behaved were guided by fossil evidence; James maintained in behind-the-scenes material that no details in the storylines of Walking with Beasts were based on fiction. Special effects and filming Chambers and Freeman worked with sculptors to create accurate reconstructions of the animals in the series. Relevant specialist palaeontologists and other researchers were consulted for each animal to gather advice on behavior and appearance. For some of the animals featured in Walking with Beasts, no models had ever been made before. The model makers also worked based on drawings and photographs of fossil material. Each maquette took several weeks to create. The finished maquettes were scanned into computers with 3D. The textures of the animals were designed by skin designers, with advice from researchers. For some of the animals in Mammoth Journey (episode six), cave paintings could give an idea of real life colors but for most others the patterns were educated guesswork. As in Walking with Dinosaurs, the computer graphics for Walking with Beasts were created by the visual effects company Framestore. Animators worked closely with researchers; experts were brought in to look at the movements of each animal to ensure that they moved accurately and advice was gathered on what behaviours each creature could have exhibited. Animating the animals in Walking with Beasts was more difficult than in Walking with Dinosaurs owing to mammals having more moving bits than dinosaurs, such as whiskers, eyebrows and various floppy and wobbly parts. Additionally, the production team believed audiences would be more critical of the movements of mammals than they had been of dinosaurs since viewers would be more familiar with how mammals move; it would thus be easier to spot inaccurate movement. The most difficult creature to animate in the series was Australopithecus, which in terms of their movement had to appear "more than an ape but less than a human".Filming Walking with Beasts took four or five weeks. Filming was usually a matter of gathering