David Attenborough narrates this BBC documentary series about the battle between nature's hunters and the hunted. Following animals including cheetahs, African wild dogs, killer whales and polar bears, the programme examines the varied strategies these fearsome predators use to snare their prey and looks at how they have adapted to their respective environments. The episodes are: 'The Hardest Challenge', 'In the Grip of the Seasons', 'Hide and Seek', 'Hunger at Sea', 'Nowhere to Hide', 'Race Against Time' and 'Living With Predators'.