<br/>Max gulped his mouthful down. "An-i-mag-us. It's a person who can turn into an animal. Professor McGonnagel can change into a cat, or so I've heard." He drank a bit of Pumpkin Juice.<br/><br/>"Anyone can do it, but you have register with the MoM before you officialy change. I heard from a 7th year that there's a potion that reveals your inner animal." He shrugged. "Wouldn't that be awesome?"