From icy wastes to arid deserts, reptiles and amphibians have used their ancient, cold-blooded body plan along with sophisticated behavioural innovations to master the harshest environments on the planet. Using their ruthless hunting abilities, extraordinary camouflage, guile and downright physical toughness, they thrive where mammals and birds fear to tread. See Komodo dragons hunting buffalo, sea snakes with one of the most toxic venoms in the world that breed in caves, the seemingly suicidal leaps of a waterfall toad, the tender giant African bull frog that digs water channels to save not only its own young, but that of others too; and lizards that can walk on water.

Originally released by BBC Worldwide Learning, 2009. Streaming video file encoded with permission for digital streaming by Infobase on April 20, 2018.

Komodo Dragons (3:32); --Toads (5:06); -- Crocodiles (2:47); -- Cold-Blooded Animals (2:36); -- Reptile Adaptations (9:14); -- Garter Snakes (4:10); -- Reptile Eggs (5:17); -- Sea Snakes (4:01); -- Giant Bullfrogs (3:59); -- Land Predators (7:12); -- Credits: Reptiles and Amphibians (0:39); .