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 (film series) was released in November 2010, and "Part 2" was released in July 2011. Five of the series' eight films are among the 50 highest-grossing films of all time, with "Harry Potter and the Deathly Hallows – Part 2" the highest-grossing film in the series and one of 36 films to gross over $1 billion, ranking at number ten. Without inflation adjustment, it is the third highest-grossing film series with $7.7 billion in worldwide receipts. Late in 1997, film producer David Heyman's London offices received a copy of the first book in what would become Rowling's series of seven "Harry Potter"