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Peter’s favorite thing about his recently achieved full shift—not that he would admit to to anyone—is how much more comfortable people are touching him when he’s in wolf shape. Derek will run close enough to him to bump shoulders. The betas jostle him when they’re all milling around. Even Stiles will pet him sometimes, if he’s distracted and Peter lays down next to him.
Stiles is absently stroking him now, and Peter can’t restrain the happy rumble. Stiles’ hand pauses. Peter squints up at him disapprovingly. “Are you purring now?” Stiles asks, but he goes back to petting. Peter rolls his eyes as obviously as he can. “Just because wolves don’t purr doesn’t mean werewolves can’t!” Stiles protests. Peter closes his eyes. “I’m kind of amazed you’re letting me pet you.”
Peter changes back and smirks at Stiles’ surprised yelp. “Stiles, you can pet me any time you like,” he says, and that tone is definitely a purr.
Stiles blushes bright red when he protests, and isn’t that delightful?