The Maned Wolf (Chrysocyon brachyurus or lobo-guará in Brazil) isn’t actually a wolf, (or a fox, coyote, dog or jackal) but rather a distant canid, but close to bush dogs. Its believed that its the only survivor of its genus from the late Pleistocene extinction. It is found in the grass lands of South America and does not form packs.
It also has a unique call, called the roar bark: http://youtu.be/oBSGEl-yB7A?t=52s
It’s a stilt fox!