Yes, they do! This is something we’re studying right now, so if you ask me again next year I should be able to tell you exactly how…
At the moment we know the most about chimpanzees, and sound is so strongly linked to their feeding behaviour that they have different sounds when you feed them different foods in captivity. They can also lie, and make a sound that means they have not very nice food, while hiding something really tasty from the rest of the group…
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