Inside the Mind of a Chimp (IMAGE) Duke University Caption Kiki is a chimpanzee at Tchimpounga Chimpanzee Sanctuary in the Republic of Congo. A new study of chimpanzees and bonobos finds that humans aren't the only species susceptible to "glass half empty" thoughts. Credit Alexandra Rosati, Duke University. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.