Zoo Chimps' Mental Health Affected by Captivity

"Many chimpanzees housed in zoos show abnormal behavior that suggest mental illness, according to a new PLoS One study.

The documented behaviors, which included self-mutilation, repetitive rocking, and consumption of feces, are symptoms of compromised mental health in humans, and are not seen in wild chimpanzees, the authors say. The study found that even chimps at very well regarded zoos displayed the disturbing behaviors."
via Discovery News / continue reading