Tales of the fourth grade nothing

The novel is divided into ten chapters, but the story is told more as separate. Nine-year-old Peter is the narrator, and much of what he narrates is the trouble his two-year-old brother, Fudge, causes in Peter's life.The story begins with Peter telling of how he won a small, green turtle at his friend Jimmy's birthday party. Peter comes home very excited because he finally has a pet.
The name of the turtle is Judy Blume.