...d the Prisoner of Azkaban. In this chapter, (entitled Cat, Rat, and Dog) has all three of them together. In the chapter, Harry states, "He's (Crookshanks) friends with the dog...I've seen them together." (336). In addition, in Order of the Phoenix, Crookshanks destroy the extendable ear that the kids are using to eavesdrop on The Order, while Regulus is in the meeting. Besides, if Crookshanks was an animagus, which from other posts, we have determined not to be the case, he would have been more important to the series in general. He is mentioned rarely and has little to no importance after Prisoner of Azkaban.