NOVA

Inside Animal Minds: Who's the Smartest?

Season 41 Episode 10 | 53m 34s Video has closed captioning.

What makes an animal smart? What forces of evolution drive brains to become more complex? Many scientists believe the secret lies in our relationships. Throughout the animal kingdom, some of the cleverest creatures—including humans—seem to be those who live in complex social groups, like dolphins, elephants, and apes. Could the skills required to keep track of friend and foe make animals smarter?

Aired: 04/23/14

Rating: TV-G

Problems Playing Video? | Closed Captioning

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