Lupin and his werewolf hat

Professer Lupin Teaches Ron andHermione how to do ridikulus, the only spell to repell Bogarts. He teaches Harry how to do Expecto Pratronem as well. During that level, Lupin has a special ability, Werewolf, wich alows him to dig. This is funny, as he only has a wolf head. Lupin also already knows every spell that You can have, not counting jinxes.