Like many red-eyed rats (6)

I believe the answer is:

albino

(Other definitions for albino that I've seen before include "Person or animal without skin or hair pigment" , "A plant lacking in pigment" , "Abnormally white animal - on Bali (anag)" , "Colourless character" , "Creature lacking pigment" .)

I've seen this clue in the USA Today.

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