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Otters are carnivorous mammals in the subfamily Lutrinae.The 13 extant otter species are all semiaquatic, aquatic, or marine.Lutrinae is a branch of the Mustelidae family, which includes weasels, badgers, mink, and wolverines, among other animals.
The North American river otter (Lontra canadensis), also known as the northern river otter and river otter, is a semiaquatic mammal that lives only on the North American continent throughout most of Canada, along the coasts of the United States and its inland waterways. An adult North American river otter can weigh between 5.0 and 14 kg (11.0 ...
The giant otter or giant river otter [4] (Pteronura brasiliensis) is a South American carnivorous mammal. It is the longest member of the weasel family, Mustelidae, a globally successful group of predators, reaching up to 1.8 m (5 ft 11 in). Atypical of mustelids, the giant otter is a social species, with family groups typically supporting ...
The Asian small-clawed otter (Aonyx cinereus), also known as the oriental small-clawed otter and the small-clawed otter, is an otter species native to South and Southeast Asia. It has short claws that do not extend beyond the pads of its webbed digits. With a total body length of 730 to 960 mm (28.6 to 37.6 in), and a maximum weight of 3.5 kg ...
The Eurasian otter is the most widely distributed otter species, its range including parts of Asia and northern Africa, as well as being spread across Europe, south to Palestine. Though currently thought to be extinct in Liechtenstein and Switzerland , it is now common in Latvia , along the coast of Norway , in the western regions of Spain and ...
The sea otter is the heaviest (the giant otter is longer, but significantly slimmer) member of the family Mustelidae, [6] a diverse group that includes the 13 otter species and terrestrial animals such as weasels, badgers, and minks.
The family Mustelidae consists of 62 extant species belonging to 23 genera and divided into hundreds of extant subspecies, as well the extinct sea mink and Japanese otter, which are the only mustelid species to become extinct since prehistoric times. This does not include hybrid species or extinct prehistoric species.
The Neotropical otter is the greatest generalist of all otter species. In addition to rivers and streams, they can settle in and exploit some rather formidable habitats, such as wastewater treatment plants, rice paddies, sugar cane plantations, estuaries, deltas, drainage ditches, and sometimes swamps.