Professor Dumbledore appointed Rubeus Hagrid to teach Care of Magical Creatures during Harry Potter's third year at Hogwarts. The compassionate and protective half-giant Groundskeeper assumed the students knew that the simple trick to taming "The Monster Book of Monsters" textbook was to stroke its spine. Press the button on this Christmas tree ornament featuring the vicious, sentient book to hear it growl as it shakes. Battery operated.