On http://www.snopes.com, they purport that Mr. Ed, the talking horse was in fact a zebra.
From their page:
WTF!? A black & white (B/W) animal filmed with a b/w camera is gonna look b/w! There’s no magic cancelling effect!
Is Snopes.com trying to pull a fast one? Debunking ULs on one hand and starting more with the other?