>>2773639If in the US or Canada, it's just a melanistic squirrel AFAIK. White with red eyes would be albino. All white without red eyes or white with patches of original color are piebald. Sometimes you also get some genetic freaks missing one of their three (?) fur colors and they look really weird. I had one local that was missing its brown hue (Eastern Grey) and it looked neat. I guess you can get melanistic, etc. Fox Squirrels too. Wonder how you can tell them apart from Eastern Greys in that case? And I've never seen a melanistic, albino, or piebald red even online now that I think of it. Wonder why Greys seem so much more likely to have those mutations?
Also there are pockets of squirrels with said mutations. Canada has a ton of black squirrels IIRC. Some cities have tons of them as well.