Planet Dinosaur, not to be confused with Dinosaur Planet, is a six-part documentary television series produced by the BBC, narrated by John Hurt, first aired in the United Kingdom in 2011, produced by VFX studio Jellyfish Pictures. It is the first major dinosaur-related series for BBC One since Walking with Dinosaurs. There are more than 50 different prehistoric species featured, and they and their environments were created entirely as computer-generated images, for around a third of the production cost that was needed a decade earlier for Walking with Dinosaurs. Much of the plot is based on scientific discoveries made since Walking with Dinosaurs. The companion book to Planet Dinosaur was released on 8 September 2011 and the DVD on 24 October 2011.