Lorri A. Greene, Ph.D., is a licensed clinical psychologist who for more than twenty years has been helping people grieve the loss of their pets. In 1986, Dr. Greene cofounded the San Diego County Pet Bereavement Program, one of the only such programs in the U.S., which offers continuous support for those who have lost companion animals. A pet loss support group facilitator who speaks widely on this topic, Dr. Greene maintains a private practice in San Diego, California. Jacquelyn Landis is a freelance writer living in the San Diego area. Alan M. Beck, Sc.D., is one of the nation's leading experts on the human-animal bond. He co-authored Between Pets and People: The Importance of Animal Companionship. Dr. Beck is professor of animal ecology and director of the Center for the Human-Animal Bond, School of Veterinary Medicine at Purdue University.