Disc 1. The Great Snake Hunt 1 x 45:00 min Join Jeff as he travels across Mexico on a mission to find the country's most venomous snakes. If he can find them and milk their venom, scientists back at the lab will be able to study the liquid for clues to producing a more effective anti-venom. Disc 2. Iguanas - Living With Dinosaurs 1 x 30:00 min Dinosaurs may be dead and gone but can the Iguana now help uncover secrets of the dinosaurs' lost world? Sir David Attenborough takes us on an investigative journey to find out. Disc 3. Urban Reptiles 1 x 45:00 min From a Brooklyn boa constrictor, to a pool loving Miami alligator, to rattlesnakes in the heart of Los Angeles, Jeff leaves the exotic locations he is used to behind him and heads to the city on a mission to find the wildlife that live in America's urban jungles'.