River Otters (Lontra) is a biological genus in the family Mustelidae (Mustelids) and order Carnivora (Carnivores).
Lontra longicaudis
Lontra felina
Lontra canadensis
Lontra provocax
Poecilogale
Taxidea
Meles
Lutra
Melogale
Pekania
Pteronura
Galictis
Arctonyx
Vormela
Martes
Mellivora
Amblonyx
Lyncodon
Mustela
Lontra
Enhydra
Lutrogale
Hydrictis
Ictonyx
Eira
Gulo