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Research reveals chimpanzees and bonobos have 'circles of friends,' just like humans

Summary by Phys.org
Chimpanzees and bonobos structure their social relationships in similar ways to humans, according to a new international study led by researchers from Utrecht University and Universidad Carlos III de Madrid. By analyzing social grooming, the team found that both species have human-like social circles.

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Phys.org broke the news in United Kingdom on Friday, October 31, 2025.
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