A Fox Squirrel observed and photographed in Carrollton, Texas.
Wikipedia has this to say about Fox Squirrels:
The fox squirrel (Sciurus niger), also known as the eastern fox squirrel or Bryant’s fox squirrel, is the largest species of tree squirrel native to North America. Despite the differences in size and coloration, they are sometimes mistaken for American Red Squirrels or Eastern Gray Squirrels in areas where both species co-exist