"Bonobo urine," he murmurs ... through the forest that we see them only as blurs of dark fur. I spy a female walking upright across a moss-covered log, her long arms held high in the air for ...

What does it imply? That a high-ranking bonobo male, walking a fine line between not enough machismo (which could cost him his status among males) and too much machismo (which could cost him his ...

Female chimps lead a life much more solitary than that their bonobo cousins, and are sometimes harassed by the much larger males. Sex is strictly about reproduction, and reproductive tactics can ...

Great Ape Trust of Iowa To better understand bonobo intelligence, I traveled to Des Moines, Iowa, to meet Kanzi, a 26-year-old male bonobo reputedly able to converse with humans. When Kanzi was an ...