| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Inner World of Farm Animals: Their Amazing Social, Emotional, and Intellectual Capacities | 978-1-58479-748-7 (1-58479-748-7) | 2009 |
| You Are My World: How a Parent's Love Shapes a Baby's Mind | 978-1-58479-591-9 (1-58479-591-3) | 2007 |