J.K. Rowling is allergic to cats and much prefers dogs

One of her favorite movies is The Fabulous Baker Boys, which was written and directed by Harry Potter screenwriter Steve Kloves

She is a huge fan of Monty Python and claims she uses some of their humour in her Harry Potter books. The two obvious references to the Monty Python sketch, Crunchy Frog, include chocolate frog and cockroach cluster sweets. Monty Python member John Cleese appears in the films

J.K. was born on July 31st, 1965. She gave Harry Potter the same day and month for his birthday but a different year

When J.K. was a was child, she was considered the bright one while her sister, Diana, was considered the pretty one.

J.K.’s last name, Rowling, is pronounced like the word ‘rolling’ and gets very annoyed when people pronounce it as ‘Rawling

Rowling has said that Halloween is one of her favorite holidays, and she usually throws a big party on the day

Her biggest regret is that her mother never saw her Harry Potter books because she started writing them six months before her mum died of multiple sclerosis

As of November 2002, J.K.’s franchise of books have sold over 175,000,000 copies and has been printed in over 200 languages to become the biggest and fastest selling novels ever.

J.K. is one of only two contemporary authors to have a novel spend more than a year on both the New York Times hardcover and paperback best-seller lists (the other author being Nicholas Sparks)

Her book, Harry Potter and the Goblet of Fire, was the top-selling book of 2000, with 7 million hardcovers sold

When writing Harry Potter and the Order of the Phoenix, she cried when she killed off a character

Hermione, the female hero of the Harry Potter books, is based on Rowling herself

In 2003, J.K.’s fifth installment of her Harry Potter series, Harry Potter and the Order of the Phoenix, became the fastest selling book ever with an average of 220 copies sold per minute in the first 24 hours.