David Attenborough reads from his account of his 1955 trip to Guyana where, while filming for an edition of the BBC Zoo Quest series, he had an alarming encounter with a caiman.

In the 1950s, David Attenborough, the naturalist and broadcaster grasped a life changing opportunity which led him to travel the world finding rare and elusive animal species for London Zoo and filming the expeditions for the BBC television series, Zoo Quest. Today, an alarming encounter with a caiman.

Abridged by Richard Hamilton

Produced by Elizabeth Allard.