Presented by David Attenborough. Capuchins are the brainiest monkeys in the world, and those in captivity appear to be smarter than those in the wild. This programme sets out to discover why. It focuses on an incredible discovery in the jungles of Brazil - wild capuchins filmed using hammers and anvils, living in a society based entirely on the ability to use tools.
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Ready to Watch Wildlife on One, Season 33, Episode 5?