Mother and infant negotiate over food; two high-status males jockey for power; female kin band together to get their way. It happens among humans and it happens among our closest living relatives in the animal kingdom, the great apes of Africa. In this eye-opening book, we see precisely how such events unfold in chimpanzees, bonobos, and gorillas: through a spontaneous, mutually choreographed dance of actions, gestures, and vocalizations in which...