Grisons and river otters are carnivorous mammals belonging to the Family Mustelidae, whose species are distinguished by their elongated body and short legs. In Argentina there are 8 species. The skunks belong to the Family Mephitidae, with 2 species in Argentina. They are omnivorous mammals, also with short legs but plump and elongated body, with a very hairy tail, and a characteristic black and white coloration.