"Bonobo urine," he murmurs ... In 1920, pioneer primatologist Robert Yerkes of Yale University named a bright young primate captured in the wild "Prince Chim." Comparing him with other chimpanzees ...

Kanzi, the famous bonobo at Des Moines' Ape Cognition and Conservation Initiative, has died at the age of 44. He had been his normal, happy self, and was even playing in the towers the day he died ...