Rebecca Johnson (IMAGE) University of Missouri-Columbia Caption Rebecca Johnson found that horses ridden by veterans with PTSD did not have undue physiological stress responses, nor did they exhibit behavioral stress while participating in a veteran's therapy program. Credit MU College of Veterinary Medicine 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.