Well yes, once he's gotten to smelling more like corn chips than warm dog smell, you've got permission to hose him down, but he's going to push that limit as far as he can. Sirius doesn't mind bathing, he's actually rather a clean man, because smelling like a dumpster certainly doesn't get you laid - but Padfoot? Padfoot hates baths. They're no fun at all.

At any rate, Sirius pushes his head appreciatively into James' vigorous ear scratches, his eyes closing at the feeling because yes, that's nice, there are few things better than ear scratches. Save perhaps for a belly rub. When Lily kisses his nose, Sirius opens his eyes again and licks a big, warm doggy kiss right up her face.

He's well aware of what you're getting up to there, James Potter; even without seeing the shape of his head under Lily's shirt, her reactions alone are evident enough. But no party here seems to have any problem at all with the arrangement. Sirius' tail thumps happily against the mattress in response to her question, and he swivels his ears forward and offers a brief, affirmative chuff. Yes, that little bastard had it coming.