This innovative book challenges the perceived view, based largely on long observation of artificially fed chimpanzees in Gombe and Mahale National Parks, Tanzania, of the normal social behavior of chimpanzees as aggressive, dominance seeking, and fiercely territorial. In polar opposition, all reports from naturalistic (nonfeeding) field studies are of nonaggressive chimpanzees living peacefully on home ranges in fluid, open, nonhierarchical groups...