This book sheds light on the peculiar social behavior of Tibetan monkeys at Mt. Huangshan, China.
Like other macaques, they live in multiple female and male groups with female philopatry and male dispersal. Unlike most of other macaques, however, male Tibetan monkeys carry an infant to another male, hold up the infant, and suck the infant's penis together. Males show his penis to another male and suck the penis of another male. In agonistic interactions, females form a coalition with unrelated females as well as with their mother and daughters. At night, they huddle and sleep on the ledge of a steep cliff.