Figure 5. Left: One adult female grooms another, while the groomer’s yearling infant nurses. Right: An adult female grooms her 16-month old daughter (foreground) while two adolescent females groom just behind them. Social grooming – picking through the fur of a partner to remove dirt, debris, and ectoparasites – is a frequent affiliative behavior in baboon social groups. Photo credits: Elizabeth A. Archie (left), Susan C. Alberts (right).