TERRY RYAN has been a professional trainer since 1968, and has published extensively in the dog training field throughout the world. She lectures internationally and hosts seminars and camps for other leading dog trainers and canine behavior specialists. She is a member of the National Association of Dog Obedience Instructors; Association of Pet Dog Trainers; the Institute of Ethology at the North American Wildlife Foundation at Wolf Park, Delta Society; and an AKC obedience trial judge. She is the director of Animal Fanciers School in Japan. She lives on the Olympic Penninsula in Washington State.

KIRSTEN MORTENSEN is a professional writer. She lives in Rochester, New York.