Does magic resistance protect against the claws or teeth of a magical creature?
Not normally. His claws are not a magical power, most of the time. It’s the same reason Parma doesn’t stop another magus from punching you on the nose. –David Chart, Berkeley Ars Magica List, 25 Nov. 2004 The claw of a supernatural beast like a dragon is not inherently magical, any more than the fist of a supernatural person like a magus is magical. Only if the claws or fist were under the influence of a current supernatural effect – something that affects the claws themselves or maybe something that acts through the claws to affect their target – would they be stopped by Magic Resistance. A related question is whether the attack of a human shapeshifted into an animal could be resisted. Generally speaking, the answer is yes. The shapeshifter is probably under the influence of a current supernatural effect. Bjornaer magi in heartbeast form are an exception: as noted in Houses of Hermes: Mystery Cults (page 24), a Bjornaer magus in heartbeast form does not count as being under a magical
