The genus Urocyon's a genus that contains two (or possibly three) living Western Hemisphere foxes in the family Canidae, the Gray Fox (Urocyon cinereoargenteus) and the closely-related Island Fox (Urocyon littoralis) which's a dwarf cousin of the Gray Fox; Urocyon and the Raccoon Dog are the only canids able to climb trees. Urocyon's one of the oldest fox genera still in existence. A third species, apparently close to extinction or even already extinct,'s (or was, until recently) found on the i… (More on Urocyon)