George S. Glass, MD, has served as a medical doctor and board-certified psychiatrist for over thirty years. He received a BA in psychology from Swarthmore College and a medical degree from Northwestern University Medical School in Chicago, and he did his psychiatric residency at Yale University Medical School. He has served as associate professor of psychiatry at Baylor College of Medicine, University of Texas Medical School, and Cornell Weill School of Medicine. He lives in Houston, Texas.David Tabatsky has coauthored several books, including Chicken Soup for the Soul's The Cancer Book and the forthcoming Beautiful Old Dogs: A Loving Tribute to Our Senior Best Friends. He lives in New York City.