Wild Mountain Gorilla Chews (IMAGE) University of California - Davis Caption Collecting plants chewed by wild mountain gorillas can tell researchers a lot about the gorillas' health. Credit Courtesy Tierra Smiley Evans/UC Davis Usage Restrictions Provide credit 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.