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A jar with some leeches.

Leeches are small slug-like creatures that live in water. They feed on human blood and/or that of other small invertebrates.[1] Leeches are used in potion-making: to make the Polyjuice Potion, four unsucculated leeches are required. [2][3] Also, a dash of leech juice is a required ingredient in the making of the Shrinking Solution. [4] Flabberghasted leeches are also used in potion-making.

Behind the scenes

  • The use of leeches in the Polyjuice Potion was chosen by J. K. Rowling to represent "[sucking] the essence out of one and into the other".[5] Interestingly, the film prop used for Moste Potente Potions suggests that the leeches used have their suckers removed.


Notes and references

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