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"It was a c-cat hair! M-Millicent Bulstrode m-must have a cat! And the p-potion isn't supposed to be used for animal transformations!"
— Incorrect use of the Polyjuice Potion[src]

This black cat was owned by the Slytherin student Millicent Bulstrode at Hogwarts School of Witchcraft and Wizardry as a pet.[1]

Biography[]

Millicents cat

Hermione having partially transformed into this cat

On 17 December 1992, Hermione Granger plucked a small hair of the cat from Millicent Bulstrode's robes in the Great Hall, thinking it was hers. She added the cat's hair to the Polyjuice Potion after completing it on 25 December 1992 in Moaning Myrtle's Bathroom, hoping to turn into Millicent so she could infiltrate the Slytherin common room with Harry Potter and Ronald Weasley. However, as Polyjuice Potion was not meant for non-human transformations, Hermione was instead partially transformed into a cat; Harry and Ron later found Hermione hiding in a bathroom cubicle with the face of a cat, with Moaning Myrtle laughing at her.[1]

Behind the scenes[]

Appearances[]

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