Bonobo groups are egalitarian ... between them is crucial not only for primatologists but also for anyone fascinated by evolution, animal behavior, and conservation. These differences also offer ...

Great apes – bonobos, chimpanzees, gorillas, orangutans – all emit play calls that acoustically resemble human chuckles.

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While laughter is often considered uniquely human, tied to language and sense of humor, all great apes produce remarkably ...