David Hagner has worked as a rehabilitation counselor and university research professor. His primary focus has been community inclusion of individuals with disabilities, and most recently, on the role of therapy and service dogs. He has authored five books and numerous book chapters and scholarly articles and has lectured nationally and internationally. Dr. Hagner lives with his wife Susan in Concord NH. He has two children and four grandchildren, and is currently semi-retired. When not writing he raises chickens, composes music, and hikes in the woods with his dog Poco.