"A Dire She-Wolf?" Neville suggested. "You've shown a vicious side to yourself, after all. But that was old Bella Lestrange's form, and that's not a parallel you want, really. She was the origin of the Grim Myth, from during the First Blood war, did you know? If a big, dark, Dire Wolf turned up at your door, bad things would happen to you ... usually involving your throat getting ripped out between her sharp fangs!"