J.K. Rowling is a genus! Think about it Sirius is a star (as you can see above) and it is very commonly called a "dog star too"... Sirius black can turn into a dog... This means Rowling really thought about the character of Sirius black and came up with his name being the star Sirius.

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POTTERHEADS!!!
RandomYou know you are a true Potterhead when you read this book and the "symptoms" are correct... This is a book about potterheads in general! Jokes, problems and more! Just a book of Potterhead randomness!!