| title | ISBN-13 | year of publication |
|---|---|---|
| Dogspeak: How to Understand Your Dog and Help Him Understand You | 978-1-57954-182-8 | 1999 |
| PetSpeak: Share Your Pet's Secret Language! | 978-1-57954-337-2 | 2000 |
| The Secret Lives of Dogs: The Real Reasons Behind 52 Mysterious Canine Behaviors | 978-1-57954-312-9 | 2000 |
| The Well-Mannered Dog | 978-1-57954-260-3 | 2000 |
| Vet On Call: The Best Home Remedies for Keeping Your Dog Healthy | 978-1-57954-181-1 | 1999 |
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