Hrdy hit the library, dug deep and discovered her langurs weren’t the only ‘wanton’ female primates out there. Many social species exhibit an aggressive sexuality, bordering on nymphomania, especially when ovulating. A wild chimpanzee female will produce only five or so young in a lifetime yet she will avidly engage in some six thousand or more copulations with dozens of males. When ovulating she might solicit every male in her community and have sex 30–50 times a day.
