Researchers have found that chimpanzees and bonobos have human-like friend circles, according to a new study. The findings suggest that great apes appear to build friendships utilizing complex social structures that mirror human patterns of interaction.
By studying grooming behavior, researchers gained insight into how these primates manage their relationships. They discovered that chimpanzees and bonobos form close inner circles comprised of key individuals. Alongside these core groups, the apes maintain wider networks of weaker social connections. This layered approach to socialization—balancing intimate bonds with looser associations—demonstrates a sophisticated level of social organization.
While the overall structure of friend circles remains similar between the two species, their specific social styles differ significantly. Chimpanzees focus on a few trusted partners, investing heavily in these key relationships. The study noted that chimpanzees become more selective with age, refining their social choices as they grow older. In contrast, bonobos maintain a more egalitarian social style. Their interactions are characterized by a broader, less selective engagement with their peers. These distinct approaches highlight the diversity of social strategies among great apes.
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