Ron: "What was that?"
Harry: "It was either a very large cat or quite a small tiger."
Ronald Weasley and Harry Potter see Crookshanks for the first time.[src]

Crookshanks is Hermione Granger's pet cat and magical familiar. He is half-Kneazle,[1] as evidenced by his lion-like appearance and ability to solve problems on his own without aid or teaching through humans.


Purchase by Hermione

Crookshanks with Hermione.

Ron: "You bought that monster?"
Hermione: "He's gorgeous, isn't he?"
Ron: "Hermione, that thing nearly scalped me!"
— Hermione and Ron after the former's purchase of Crookshanks[src]

Crookshanks was purchased by Hermione Granger from the Magical Menagerie in Diagon Alley in 1993. The proprietor informed Hermione that he had been there for quite some time, and that "nobody wanted him."[2] It could be that as a highly intelligent animal, Crookshanks was merely waiting for someone worthy of his companionship.

Crookshanks and Scabbers

"This cat isn't mad. He's the most intelligent of his kind I've ever met."
Sirius Black on Crookshanks[src]

Crookshanks played an instrumental part in Sirius Black's attempts to enter Hogwarts Castle for the purpose of procuring Peter Pettigrew, who was masquerading as Scabbers, Ron Weasley's beloved pet rat. Crookshanks immediately took a disliking to Scabbers, trying to attack him through Ron's clothes the first time they met. Afterwards, Crookshanks independently sought Scabbers out, causing the rat to seek hiding places. When Scabbers took off to hide in Rubeus Hagrid's hut, Ron was convinced that Crookshanks had eaten him. This caused a row with Hermione, until he was found at Hagrid's.

Crookshanks met Sirius Black in his Animagus form of Padfoot on the Hogwarts grounds several times, and stole the passwords to Gryffindor Tower from Neville Longbottom to help him get into the castle. Crookshanks helped Sirius lure Harry, Ron and Hermione into the Shrieking Shack. During the scuffle between Harry and Sirius, Crookshanks attempted both to steal Harry's wand and attack Harry, and when both failed, set himself over Sirius' heart. The hesitation that Harry felt gave enough time for Lupin to arrive.

Crookshanks led the way back through the tunnels. However, when Lupin transformed, Pettigrew stole Lupin's wand and stunned both Ron and Crookshanks, escaping. After all this, Ron was able to accept Crookshanks as a remarkable animal companion.[3]

Crookshanks on the Hogwarts Express with Hermione and Ron.

Crookshanks soon became more friendly to others; for example, he once curled up in Harry Potter's lap when Harry was waiting to hear from Sirius. However, he still remained unusually perceptive and disapproving of bad behaviour, judging by how he stared at Harry and Ron when they made up answers for their Divination homework.[4]

Second Wizarding War

During the height of the Second Wizarding War, Hermione and Crookshanks came to stay at the Burrow, but Hermione left with Harry and Ron after Bill Weasley and Fleur Delacour's wedding reception was interrupted by Death Eaters.[5] It is unknown what happened to Crookshanks while Hermione was searching for Horcruxes with Harry and Ron, or if they were ever reunited.

Appearance and Traits


"Clever Crookshanks, did you catch that all by yourself?"
Hermione Granger after Crookshanks catches a spider[src]

Crookshanks is highly intelligent and is described as very big, bandy-legged, ginger-colored and with a "squashed head"; his face looks as if he had "run headlong into a brick wall."[3] This type of cat's face is known as a "pansy face." Based on these markings, Crookshanks' feline breed red is a hansa persian, or ginger persian cat. Crookshanks is also playful; he enjoys catching spiders[6], chasing gnomes in the Weasleys' garden[7], and attacking chess pieces[8]. He is affectionate with those he likes, but aggressive or disdainful of those he does not, and is an excellent judge of character.


The name Crookshanks seems to refer to the cat's bandy legs, from crook, meaning "a bend", and shank, a term for the lower part of the legs.

Behind the scenes


Notes and references

  1. 1.0 1.1 "Croonkshanks" on J.K. Rowling Official Site
  2. Prisoner of Azkaban, Ch. 4
  3. 3.0 3.1 Harry Potter and the Prisoner of Azkaban
  4. Harry Potter and the Goblet of Fire
  5. Harry Potter and the Deathly Hallows
  6. Prisoner of Azkaban, Ch. 8
  7. Goblet of Fire, Ch. 5
  8. Harry Potter and the Order of the Phoenix, Ch. 38
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