Navy Capt.(Dr.) Robert Koffman, psychiatrist and chief clinical consultant at the National Intrepid Center of Excellence on the campus of Walter Reed National Military Medical Center in Bethesda, Md., says his newly graduated therapy dog, Ron, the mascot at the center, is therapeutic for patients with traumatic brain injury, post-traumatic stress disorder and for staff and caregivers. Petting a dog releases the hormone oxytocin, which calms both the human and the dog, he said. DOD photo by Terri Moon Cronk Navy Capt.(Dr.) Robert Koffman, psychiatrist and chief clinical consultant at the National Intrepid Center of Excellence on the campus of Walter Reed National Military Medical Center in Bethesda, Md., says his newly graduated therapy dog, Ron, the mascot at the center, is therapeutic for patients with traumatic brain injury, post-traumatic stress disorder and for staff and caregivers. Petting a dog releases the hormone oxytocin, which calms both the human and the dog, he said. DOD photo by Terri Moon Cronk SHARE: Download: Full Size (0.41 MB) Credit: VIRIN: 150165-W-MQE72-288.jpg Photo Gallery