How Chimpansi and Bonobos Can Help Scientists Build a Picture of Our Past

Chimpansi and vanovas are not our ancestors, but they provide a kind of window into how our ancestors might have lived. Our hunter gatherer life style wouldn't have been too different from chimps searching for food without cooking or farming. Scientists believe that studying chimp eating habits can help us build a picture of our own past. If you see a chimp spit something out, you probably won't like it either - especially after the chimp's been chewing ya.