The students board the Hogwarts Express train and are stopped once by an entity called a Dementor. In divination class, Professor Trelawney foresees Harry's death by reading tealeaves and finding the representation of a Grim, a large black dog symbolizing death. In the care of magical creature’s class, Hagrid introduces the students to Hippogriffs (see figure 2), large crosses between horses and eagles. Malfoy insults one of these beasts, Buckbeak, and is attacked. Malfoy drags out the injury in an attempt to have Hagrid fired and Buckbeak put to sleep. In defense against the Dark Arts, Professor Lupin leads the class in a defeat of a Boggart, which changes shape to appear as the viewer's greatest fear. For Lupin, it turns into an orb, for
