Chimpanzee society often gets classified as a complex, patriarchy, prone to intergroup and intragroup episodes of violent aggression.
Follow up studies also note chimpanzee tool use and learning along with other behaviors such as a sense of humor and reconciliation or intragroup empathy for chimpanzees subject to aggressive treatment.
Like their relatives the chimpanzees, bonobos also live in a complex social structure. Unlike the chimpanzees, bonobo social structures are characterized by a mixed matriarchy and patriarchy, comparatively less aggression and comparatively greater non-reproductive sexual activity.