Chimp on Treadmill (IMAGE) University of California - Davis Caption A chimpanzee walks upright on a treadmill as part of UC Davis anthropologist Michael Sockol's research into the origins of bipedalism. The face mask helps scientists measure oxygen consumption. Credit Copyright Cary Wolinsky Usage Restrictions Must include photo credit and copyright. 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.