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A look at reptiles and amphibians, including marine iguanas which like to sunbathe, and how lizards use dead horse arum plants as underfloor heaters. Plus, female lizards which choose their mate by who claims the hottest rocks, and an area which claims the largest concentration of tortoises.

Episode Title: The Cold Blooded Truth
Airs: 2008-02-4 at 09:00 pm