Walking with BeastsThe Science of Walking with Beasts, Triumph of the Beasts Clips

1. Evolutionary arms race

   Duration: 03:59

2. Green revolution

   Duration: 01:38

3. Gentle giants

   Duration: 02:30

4. Ugly mammals

   Duration: 03:29

5. Desert whales

   Duration: 03:35

6. Big bird

   Duration: 02:08