Tail wagging, Sirius trotted along obediently at her heel. He had to wonder why anyone would be friendly to a dog like him. The last time he had been offered food, it had been a different season altogether. Maybe it was because his matted fur reminded her of her own hair - no, that was an awful thing to think of someone so nice, even if it was just in thought. It was true, but he made up his mind not to judge. No matter how greasy her hair was, he would still be grateful. Even if it was as bad as Snivelus's.
Sirius wagged his tail when she asked about his name. How else was he supposed to respond? At her suggestion he could barely hold in a snicker, though it sounded somewhere between a snort and a sneeze. But it wasn't like he could think of anything better (or that he could really speak up to disagree), so instead he wagged his tail and gave a soft bark of approval.