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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 ...
2013: A North American River Otter runs around in the snow and hides in its hollowed-out log. American Mink and Northern River Otters have long, slender bodies and relatively long tails.
A study of mid-elevation (1,840 feet (560 m) - 3,310 feet (1,010 m)) beaver-dammed vs. undammed lentic streams in Washington's southern Cascades found that prevalence of slow-developing amphibian populations was 2.7 times higher in the former, because beaver ponds were deeper with longer hydroperiods.
The North American beaver is the state mammal of New York. ... North American river otter, L. canadensis LC; Genus: Martes. American marten, M. americana LC;
Extirpated; the last native sea otter in Oregon was killed in the early 20th century. In 1970 and 1971, 95 sea otters were reintroduced from Amchitka Island, Alaska, to the southern Oregon coast. However, the attempt failed and otters soon disappeared. Occasional sightings are most likely wanderers from neighboring states. North American river ...
American River Otters were native to Ridley Creek, an offshoot of the Delaware River that winds over 20 miles through suburban Philadelphia, before European settlers arrived but vanished due to ...
There are two extant species: the North American beaver (Castor canadensis) and the Eurasian beaver (C. fiber). The Eurasian beaver is slightly longer and has a more lengthened skull, triangular nasal cavities (as opposed to the square ones of the North American species), a lighter fur color, and a narrower tail.
There are several species of fresh water otters commonly known as river otters. Eurasian river otter, found in Eurasia; Giant river otter, found in South America; Japanese river otter, an extinct species; Neotropical river otter, found in Central and South America; North American river otter, found in North America; Southern river otter, found ...