Tinka, a golden retriever, is "a joy dog, a boy's dog, a chews-a-brand-new-toy dog." She loves her boy and doesn't like being left at home. When Mom isn't looking, the "spring-and-sprint-and-streak dog" races to school finding her boy in his classroom. Although she makes the teacher unhappy by messing up the room, the students are delighted to see Tinka.
Lexi didn't want to return this book. She is completely addicted to it. So having this book would mean a lot to her.