There's going to be a Pet Day at school— only the rule is No Dogs! And that's the only kind of pet Junie B. has! If Mother won't let her get a new pet, then Junie B. will have to take matters into her own hands. Maybe a jar of ants? Or a wiggly worm? Or— could it be— something even better? The world's funniest kindergartner is back in her twelfth book!