Derek can smell the sharp stench of fear on Dean and whines a little. It's uncharacteristic of Dean to be so afraid. He hunches down a little, trying to make himself look a bit smaller, if only to get Dean to calm down. He's afraid, too, because he can smell the tang of metal and gunpowder. Dean's bullets wouldn't kill him, he doesn't think. But he really doesn't feel like getting shot today.

Dean says his name and he nods, tail thumping against the ground a few times as he looks up at him. He lets his mouth fall open, tongue lolling out as he pants. He looks ridiculous, like a slobbering puppy he's sure, but hey, if it makes Dean not shoot him, he'd let him scratch his belly.

Actually no, no one is getting anywhere near his belly if they want to keep their hand.