| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| One Nation Under Dog: Adventures in the New World of Prozac-Popping Puppies, Dog-Park Politics, and Organic Pet Food | 978-0-8050-8711-6 (0-8050-8711-7) | 2009 |
| Right from the Start: Create a Sane, Soft, Well-Balanced Horse | 978-1-57076-208-6 (1-57076-208-2) | 2002 |