- 100 Cats Who Changed Civilization: History's Most Influential Felines
- The Cat Owner's Manual: Operating Instructions, Troubleshooting Tips, and Advice on Lifetime Maintenance (Quirk Books)
- The Dog Owner's Manual: Operating Instructions, Troubleshooting Tips, and Advice on Lifetime Maintenance
- Flailing at Life: Lessons from the Wacky Waving Inflatable Tube Guy
- 100 Dogs Who Changed Civilization: History's Most Influential Canines