COMPAMIR
High-Purity Fact Pipeline
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High-Purity Fact Pipeline
Researchers from Utrecht University and Universidad Carlos III de Madrid
Global
May 31, 2026
Verified: May 31, 2026
"A study of 24 groups of chimpanzees and bonobos reveals a layered social structure similar to human friendship circles. Chimpanzees tend to focus on a small number of preferred partners, while bonobos maintain more egalitarian relationships. The findings suggest deep evolutionary continuity in how complex social relationships are managed across species."