Koko's Kitten (by Dr. Francine Patterson)

Although this book's pages seem text-heavy, the story of these two mammal friends captivates even the youngest listeners -- and children seem even more engaged because the story is true. The photographs give the reader a closer-than-the-zoo look at one of our remarkable primate cousins.

Kids gravitate toward the story and are eager to share their own pet tales after seeing Koko and All Ball at play. And because the book expresses the despair and anger Koko feels after All Ball's sudden death, children who have also experienced the loss of a pet are encouraged to vent their feelings. Since Koko is renowned for her ability to communicate with humans, it seems appropriate that her tale opens the door for children to share their grief.