I’ve seen black squirrels.
And of course fox squirrels. Fox squirrels are about a third larger then grey ones.
I’ve also seen 3 badgers, and a wolverine.
I also had a chipmunk run over my legs several times. I then waited until he was just about to run over me again, when I raised my arms and said “BOO!” That poor thing jumped straight in the air, then ran about 20 feet away from me and cursed me out! (At least I’m pretty sure he was cursing, as I don’t understand “chipmunk”)