I had the opportunity to read a pre-publication proof of WDJ contributor Kathy Callahan’s newest book, co-authored with Helen St. Pierre, and I can’t recommend the book strongly enough. Old Dog, New Dog helps dog owners anticipate the potential pitfalls of bringing a new young dog into a home already inhabited by a senior dog—and adroitly steer around them in order to seamlessly create a joyful, trauma-free blended canine family.