Ron is angry because he feels Crookshanks is responsible for Scabbers' disappearance, while Hermione fiercely maintains that Crookshanks is innocent.
Ron pun marah karena ia merasa bahwa Crookshanks-lah yang bertanggungjawab atas hilangnaya Scabbers, sementara Hermione keras kepala menyatakan bahwa Crookshanks tidak bersalah.