Harry Potter and the Prisoner of Azkaban attacked by a big black dog, which Harry has seen several times before. The dog drags Ron through a tunnel under the Whomping Willow into the Shrieking Shack. Harry and Hermione follow, and there is a brief standoff when they find Ron with Sirius Black, who has transformed from the dog. Lupin enters, and they explain the situation to Harry and his friends: Lupin is a werewolf, which led to his friends James Potter, Sirius Black, and Peter Pettigrew becoming animagi. Lupin explains that Scabbers is Pettigrew in his animal form; he has been hiding from Black, whom he had
Harry Potter and the Deathly Hallows Harry Potter and the Deathly Hallows Harry Potter and the Deathly Hallows is a fantasy novel written by British author J. K. Rowling and the seventh and final novel of the "Harry Potter" series. The book was released on 21 July 2007, ending the series that began in 1997 with the publication of "Harry Potter and the Philosopher's Stone". It was published in the United Kingdom by Bloomsbury Publishing, in the United States by Scholastic, and in Canada by Raincoast Books. The novel chronicles the events directly following "Harry Potter and the Half-Blood Prince" (2005) and the final confrontation between