Dana Jennings is the author of "WHAT A DIFFERENCE A DOG MAKES: Big Lessons on Life, Love, and Healing from a Small Pooch." (Doubleday; 11/2). He is also currently assistant editor of the New York Times Arts & Leisure section, and writes a popular column about coping with prostate cancer and its aftermath for the Times well blog. He is the author of five previous books, most recently Sing Me Back Home. He lives with his family – including two new golden retrievers – in Upper Montclair, New Jersey.