6Oct/091
Episode 9 : Sperm Competition
To further analyze sperm competition and how the physical traits of animals can directly relate to behavior, Danny and Professor Tak Cheung compare the great apes: chimpanzees, gorillas, humans, and orangutans.

The Great Apes
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October 6th, 2009 - 17:46
It was very interesting! I don’t know if its just me, but I heard nothing about the orangutan’s testicles.