Ben Fogle heads to Botswana to join a research team studying the underwater behaviour of Nile crocodiles - they rarely attack when on the river bed.

Ben Fogle and the team of scientists head to Australia's Northern Territory to meet - and dive with - the saltwater crocodile, the most aggressive of all reptiles. Show more

Wildlife documentary. Africa's largest herd of elephants and a fearless pride of young lions come face to face in an epic fight for survival. Show more

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. Show more

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

With incredible underwater footage, David Attenborough reveals the true nature of the hippopotamus – an animal that cannot swim yet is utterly dependent on water. Show more