Crossword Genius

Pet pest (4)

Ross

I believe the answer is:

flea

'pet pest' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for flea that I've seen before include "Circus insect?" , "Tiny parasite" , "Jumping, blood-sucking insect" , "Little jumping insect" , "Small parasitic insect" .)

I've seen this clue in the L.A. Times Daily, The Star Tribune, the Wall Street Journal, the New York Times, the King Feature Syndicate and the Newsday.com.
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