A black boy asks his white mother for a dog. She (finally) agrees, but then his dog wants a pet. And then the dog's cat wants a pet! The boy's mother gets increasingly frustrated until he realizes that she is "a special and important someone, who wasn't happy." As a solution, he gifts her himself in a box because "whenever you take care of something, that something takes care of you" - a theme that is repeated throughout the story.
There are countless wonderful things about this book that both my son and I adore. The writing is simple but catchy - the repetitive story leads to us both gleefully yelling out variations on "That worm is the pet of the pet of the pet of your pet! He does NOT NEED A PET" over and over. Both the illustrations and the story recognize the boy's mother as an important character with her own interests and needs - she is shown reading, doing yoga, washing dishes (with the boy's assistance), working at a desk, and gardening. There is no father pictured, and they boy can be read as either her biological child or transracially adopted.
BUY HERE (or request at your local library!)