Like other otter species, the North American river otter (Lontra canadensis) has a long, sinuous, streamlined body, highly modified for aquatic life. The limbs are short and powerful, the clawed paws are fully-webbed, and the flattish head terminates in a broad muzzle equipped with numerous sensitive whickers used for detecting prey underwater. To propel itself through the water, this species primarily combines hind-limb paddling with vertical undulations of its remarkably long, tapering tail. The body is covered in densely packed underfur, overlaid with longer guard hairs that trap a layer of insulating air when the otter is swimming underwater. Generally the sleek outer fur is brown to velvety black above, and paler greyish-brown to silver underneath, but there is considerable regional variation in this species’ appearance, with numerous recognised subspecies. Although the sexes are identical in overall appearance, the males are, on average, around five percent larger and darker in color than the females.
- It played The Flunkey Monkey in The North America Book
- It played Buizel in Pokémon (Samwei1234 Version)
- It played Ms. Flint in Yellowstone Animals, Inc.
- They played Bass on the Brass and Smelt and the Sprat (along with Muskrats, Mallards, Wood Ducks, Canvasbacks, Hooded Mergansers, Green-Winged Teals, Northern Shovelers, Northern Pintails,Canada Geese, Snow Geese, Trumpeter Swans, Common Loons, American Coots, Sandhill Cranes, Whooping Cranes, Great Blue Herons, Roseate Spoonbills, American White Ibises, Wood Storks, Great Egrets Anhingas, American White Pelicans, Red-Winged Blackbirds, Yellow-Headed Blackbirds, Alligator Snapping Turtles, Red-Eared Sliders, American Alligators and American Bullfrogs) in The Little Mer-Misty (NatureRules1 Version)
- It played Sandy Cheeks in Spongebob Squarepants (NatureRules1 Version)
- It played Pin in Battle For North American Island
- It played Gloria in North America (Samwei1234 Version)
- It played The Mayor of Townsville in The Powerpuff Mustelids, The Powerpuff Mustelids Movie, and The Powerpuff Mustelids (2016)
- It played Blossom in The Powerpuff Otters, The Powerpuff Otters Movie, and The Powerpuff Otters (2016)
- It played Michelangelo in Teenage Mutant Ninja Mustelids
- They played Zac (Merman) and Evie McLaren (Mermaid) in Mako Mustelids and Mako Otters
- It played Ondina (Mermaid) in America: Just Add Mammals
- It played Gracie (Mermaid) in North American Forests: Just Add Animals