Dog Snacks (image) Washington State University Caption A participant at Excelsior Youth Center in Spokane, Wash., gives treats to a shelter dog from the Spokane Humane Society. A first-of-its-kind study demonstrates how dog-interaction activities improve the mood of teenagers living in residential treatment centers. Credit Courtesy of Washington State University Usage Restrictions None 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.