White rat, e.g. (6)

I believe the answer is:

albino

(Other definitions for albino that I've seen before include "Animal with pigment deficiency" , "Abnormally white animal - on Bali (anag)" , "Pink-eyed being" , "A plant lacking in pigment" , "No bail for one lacking colour pigment" .)

I've seen this clue in the King Feature Syndicate.

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