Like the gorilla Snowflake, once at the Barcelona Zoo (6)

I believe the answer is:

albino

(Other definitions for albino that I've seen before include "Abnormally white creature" , "Person or animal lacking pigmentation" , "Abnormally white animal - on Bali (anag)" , "Animal or plant lacking pigmentation" , "Person lacking pigment" .)

I've seen this clue in The Washington Post.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.