It was supper time in the Whittier, California, home of Air Force veteran Danyelle Clark-Gutierrez, and eagerly awaiting a bowl of kibble and canned dog food was Lisa, a 3-year-old yellow Labrador retriever.
Her nails clicking on the kitchen floor as she danced about, Lisa looked more like an exuberant puppy than a highly trained service animal that helps Clark-Gutierrez manage the symptoms of post-traumatic stress disorder (PTSD).