Usually I see the eastern grey squirrels which are so much larger. And greedier. And obnoxious. And they come in black fur model too. And they also appreciate a snack of stale bread.
This particular grey squirrel has become addicted to drinking sugar water out of my hummingbird feeder, and making such a mess that wherever I hang the feeder, somehow this squirrel manages to hang upside down to drink the water, spilling most of it in a sticky puddle. The poor hummingbirds don't get a chance.
When I've been on the deck drinking my early morning coffee, I've seen a hungry fox lurking, so those sugar addicted squirrels better watch out or they'll be a fox's dinner.