And a hat tip to long-time reader Binho, from Brazil, who sent a link with this info:
The maned wolf's evolutionary relationship to the other members of the canid family makes it a unique animal. Electrophoretic studies did not link Chrysocyon with any of the other canids studied.
One conclusion of this study is that the maned wolf is the only survivor of the late Pleistocene extinction of the large South American canids. Fossils of the maned wolf from the Holocene and the late Pleistocene have been excavated from the Brazilian Highlands...
The maned wolf is not closely related to any other living canid. It is not a fox, wolf, coyote, dog, or jackal, but it is a distinct canid.