"The Familiarus Theorem of Transfiguration states, that an object's original form is recognizable through careful observation…"

Remus wondered what had stopped his meditation. Since that night he found that Hogsmeade Library was a good place for quiet. He looked over, and saw a boy with red hair and glasses reading a humungous book to a rat perched on his shoulder. Briefly, the rat's eyes apparently pleaded with the boy to stop, just like Peter used to when Remus confused him. In fact, that rat almost looked like Wormtail. Remus shook his head. Peter was dead, he would have to adjust.