Social Structure; The Adult Male

In a chimp group, there is typically a number of adult males and females.  The males, like the females, spend much of their time foraging for food.  Together, they protect the group from predators.  A group of males sometimes go on patrols of the group’s territory.  If a strange chimp comes into their territory, he or she may be in serious trouble – a group of males will attack a single male interloper.  If it is a female, they might decide instead to include her in their group.