Class [Mammalia] Linnaeus, 1758 - mammals Order Carnivora Bowdich, 1821 - carnivores Family Mustelidae Batsch, 1788 - weasels, badgers, skunks, and otters Genus Pteronura Gray, 1837 - giant otter 1 Pteronura brasiliensis (Gmelin, 1788) - giant otter