Otter

The Otter (Lutrinae)

Lutra

 * Eurasian otter
 * Hairy-nosed otter
 * Japanese otter†

Hydrictis

 * Spotted-necked otter

Lutrogale

 * Smooth-coated otter

Lontra

 * North American river otter
 * Southern river otter
 * Neotropical river otter
 * Marine otter

Pteronura

 * Giant otter

Amblonyx

 * Asian small-clawed otter

Aonyx

 * African clawless otter

Enhydra

 * Sea otter

Fictional Otters

 * Ed, a giant otter from Brandy & Mr. Whiskers
 * Fico from Doki
 * Marlene from The Penguins of Madagascar TV series
 * Mr. Otterton and Mrs. Otterton from Zootopia
 * Peanut Otter, Baby Butter, Jelly, Opal and Ernest from PB&J Otter
 * Pierre and Noneck from Camp Lazlo

Sea otters

 * Reggie Belafonte from Surf's Up
 * Russell from Happy Tree Friends