Peter takes a moment to give Isaac a one-eyed look of canine distain to communicate what he thinks about the usefulness of jackets versus wolves before he closes his eyes and leans up into the scritches with a pleased sound. If Isaac tries to move again, though, he'll move off of him and wait for the other boy to decide what to do. Peter knows full well that as a wolf his thought processes are simpler, that a lot of human concerns fall away and the world gets sharper and clearer. He's content to sit there and let Isaac rub his ears, but Isaac may have other concerns.