The Primate Police

An anonymous reader writes "LiveScience reports on research indicating that certain monkeys act like cops in a group. When they removed the enforcers, the monkey society fell apart. The rest of the monkeys quickly formed cliques with friends and family and interaction between the groups ceased. More interesting is how the monkeys 'vote' for their law enforcement officials, by baring their teeth to show deference. From the article: 'When an individual receives these voting signals from most of the group, it shows he is well respected--or feared--and he becomes the new sheriff in town.'"