Jane Goodall's chimp studies are the longest continuous study of any animal group in the world. Chimps systematically hunted other chimps, killed, and ate them . Chimps are as distinct from one another as humans. Jane Goodall gave them names. Because much of maternal behavior is learned , Flo is a role model for her daughter Fifi.
Males take no part in child rearing .
Physical contact for its own sake seems to be a primary goal of chimp grooming, and chimps give reassurance to one another by touch. Chimps are stronger than humans, and if they lose their fear they could be dangerous. Nowadays, the researchers try to minimize all physical contact wit the Chimps. The Chimpanzees of Gombe Kenneth P. Oakley, Man the Toolmaker , Chicago, 1957.