Part 4/4 Life In Cold Blood Ep. 2. The extraordinary and intimate lives of the soft-skinned amphibians. Marsupial frogs where the father carries his young in pouches, giant metre-long salamanders staging wrestling matches and newts that display just like birds of paradise. From steamy jungles to dry deserts, David looks at the bizarre life histories that enabled the amphibians to break their ties with water and invade the earth.
