"Fantastic Beasts and Where to Find Them” hero (4)

I believe the answer is:

newt

(Other definitions for newt that I've seen before include "Went to find amphibian" , "legless for a start" , "The epitome of drunkenness" , "Amphibian - a Ken Livingstone pet?" , "Semiaquatic amphibian" .)

I've seen this clue in The Wall Street Journal.

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