Beyond Companionship: Dogs with a Purpose"This book serves a valuable purpose. It demonstrates the special relationship between people and animals and shows how dogs contribute significantly to the health and emotional stability of many individuals." Alan M. Beck, ScD, Professor and Director, Center for the Human Animal Bond, Purdue University, School of Veterinary Medicine, Indiana, and Aaron H. Katcher, MD, Professor Emeritus, University of Pennsylvania. Authors of Between Pets and People