Bonobos rate food on scale from bark to grunt
Great apes yell out food ratings using at least five distinct vocalizations
Bonobos yell out their food ratings using at least five distinct vocalizations, the study found. Since the calls are tonally similar to certain other primate sounds, such as the human exclamations "Yum!" and "Ewww," the scientists think there might be a somewhat universal primate language when it comes to food.
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