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"Alys, don't forget your rat tail."
Horace Slughorn reminding Alys to take her rat tail with her after Potions class[src]

Rat tail is a the tail of a rat and a common potion ingredient. It is used in the Hair-Raising Potion.[1]

Appearances

Notes and references

  1. Harry Potter and the Chamber of Secrets, Chapter 13 (The Very Secret Diary)
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