Well, I do hope you get to keep him. Any rat that escapes from Professor Carrow's clutches deserves the best possible chance.

I am trying to think of names of famous people who have escaped, say from prison. There's Sebastian the Stalwart, you know. From the comic book, The Alchemical Adventures? The one who wriggled out of the prison sewers. The story's mad, but it's fun. Don't know if you ever read that one.