The discovery of a nest in the Orinoco rainforest gives film-maker Fergus Beeley a unique opportunity to see the rare harpy eagle.

Sri Lanka is home to its own special elephants. Cameraman Martyn Colbeck, of Echo of the Elephants fame, has travelled to Sri Lanka to reveal their world.

Wildlife documentary. David Attenborough narrates the story of a leopard mother and her two cubs as they try to survive in the wilds of Botswana.

Wildlife film. In southern Africa, a pride of lions have rewritten the rules - they have learnt to take down elephants. A follow-up to Africa's Giant Killers.

David Attenborough narrates this astonishing story of a wild cheetah family. Known for being fast, captivating and extremely elusive, this is an insight into their remarkable lives captured by cameraman Kim Wolhuter. For nearly two years, he walked alongside a wild cheetah mother and her young family to unravel in intimate detail what it takes to turn tiny cubs into accomplished predators.

This film tells the epic survival stories of the world's smallest animals. It really is a big bad world out there. So what happens if you are the little guy?