The Eastern Gray Squirrel (Sciurus carolinensis), or the Grey Squirrel, depending on region, is a tree squirrel native to the eastern and midwestern United States and to the southerly portions of the eastern provinces of Canada. The native range of the Eastern Gray Squirrel overlaps with that of the fox squirrel (Sciurus niger), with which it is sometimes confused, although the core of the fox squirrel's range is slightly more to the west.