Red Fox (Vulpes vulpes). My apologies for the graininess of the photo. This is the only time that I have both seen a fox and had a camera with me. South Park, Pennsylvania. Sep, 2008.
American Bison (Bison bison). As is obvious from the fence, this is not a wild animal, but it is in its natural range. Many of the bison in America today are descendants of bison crossbred with cows. South Park, Pennsylvania. Nov, 2009.
Eastern Fox Squirrel (Sciurus niger). Very common, especially in urban and suburban areas. Notice the gray back and brownish orange underside and tail.