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The original was posted on /r/todayilearned by /u/EkariKeimei on 2023-09-09 13:32:54.

Original Title: TIL that a rat king is not a large, singular rat, but a collection of rats that get their tails in a knot by accident (and squirrels can have this happen too); it has been recorded to happen about 60 times in the past 500 years