David Attenborough captures a three-toed sloth and witnesses leafcutter ants at work as he travels to South America in search of rare and interesting animals.

David Attenborough's exploration of the forests of what was then British Guiana continues, as he searches for rare animals to film.

David Attenborough reports on the rare animals he found on an expedition to then British Guiana.

Another report from the expedition that recently returned from filming and capturing rare animals in the forests of South America.

David Attenborough introduces film of fishing and bird hunting trips. He also uses special apparatus to demonstrate the electricity produced by two electric eels in a tank in the studio.

David Attenborough presents a final report on his expedition to film and capture rare animals in the forests of South America.

David Attenborough's quest to find birds of paradise continues with a visit to Raine Island, home to seabirds and turtles.

David Attenborough's search for birds of paradise leads him to the New Guinea mountains, where he sets up base camp.

A focus on the people of the Wahgi Valley, as David Attenborough continues his search for birds of paradise along the Great Barrier Reef of Australia and in the mountains of New Guinea. Show more

Cameras follow David Attenborough's search for birds of paradise along Australia's Great Barrier Reef and into the mountains of New Guinea.

David Attenborough embarks on the last stage of his journey through the mountains of central New Guinea in search of birds of paradise.

David Attenborough begins his search for rare and interesting animals in central South America. He shows film of his encounter with swarms of butterflies, toucans and hangnest birds. Show more

David Attenborough shows some of the creatures that live on the flat, rolling plains of Northern Argentina.

The Chaco is a vast, flat plain in western Paraguay. In the rainy season it is a swamp, in the dry season a parched desert. David Attenborough shows film of people and animals that live there. Show more

David Attenborough begins his journey in search of birds of paradise at the Great Barrier Reef, discovering the fish, molluscs, sea anemones and birds that live among the coral.

David Attenborough finds rheas, a relation of the ostrich, and looks for some of the creatures that live in burrows on the pampas. Plus an interview with zookeeper J.P. McCorry.

David Attenborough continues his journey across the Gran Chaco to visit one of the isolated patches of scrub and cactus that provide shelter for many of the Chaco animals. Show more

David Attenborough introduces his last programme about collecting animals in the swamps, forests and plains of central South America, and brings some of the creatures themselves to the studio. Show more

First transmitted in 1956, David Attenborough and the Zoo Quest team venture to the islands of South East Asia in search of the legendary Komodo dragon. Show more

First transmitted in 1956, David Attenborough and cameraman Charles Lagus begin their quest in Borneo, the first in the chain of islands they must cross in order to reach Komodo. Show more