Sirius pouted, trying to shove his head back under Peter's hand, but he was moving now. He got to his feet and stuck out his tongue at his friend's back. He retreated briefly to the bedroom, returning with a blanket and draping it over Peter. Even though he'd refused to scratch his head. Hrmph.
"Couch is too small," he muttered before transforming and hopping up onto Wormtail's legs and curling up.