Not "last" because all the others are about to die out, but because they are the most recent of the apes to be studied thoroughly. Kano (zoology, Primate Research Institute, Kzota, Japan) recounts his observations and experiences in the Wamba Forest, Zaire, 1974-85, studying what many believe to be the species most closely related to humans. He particularly notes how the lifelong sexual and quasi-sexual behavior among individuals of any age and gender, alleviates the competition and dominance prevalent among other primates. Annotation copyrighted by Book News, Inc., Portland, OR