2019 - How Dogs Work (Paperback) → Hardcover ISBN-13: 9780226637761 ISBN-10: 022663776X Genres: Crafts, Hobbies & Home, Science & Math ? 2015 - How Dogs Work (Hardcover) → Paperback ISBN-13: 9780226128139 ISBN-10: 022612813X Genres: Crafts, Hobbies & Home, Science & Math ? |