River Otter
The river otter of North America is a semiaquatic mammal that’s well suited for life both in the water and on land.
Class: Mammalia
Order: Carnivora
Family: Mustelidae
Genus: Lontra
Species: L. canadensis
Common Names: River Otter, North American River Otter, Northern River Otter, American Otter, Canadian Otter
Otters are playful animals that are often seen wrestling and chasing each other. This helps them build social bonds. However, despite their jovial attitude, they can be aggressive toward humans and should be treated with caution.
River otters are predators, eating mostly fish, frogs, salamanders, crayfish, turtles, snails, mussels and clams.
Otters live in burrows near the water. They are semiaquatic and are always found near bodies of water, though their habitat can vary and includes rivers, lakes, shorelines, and swamps.
Mother otters give birth in dens. They do not build these dens themselves, instead finding those of other animals, including beavers. Otter babies are called kits, and each litter can have between one and five kits. Kits begin testing out their swimming ability when they reach around two months old.
River otters have long, slender and streamlined bodies that allow them to move easily through water.
Their eyesight is adapted for seeing in water, and is quite poor on land. They have a special membrane that protects their eyes underwater, and long whiskers to help them find prey when the water is too dark or murky to see.
River otters can weigh up to 25 pounds and grow over 40 inches long.
Their fur is thick and is water resistant.
The North American river otter was previously included in the same genus as the Eurasian river otter – Lutra. However, it was later reclassified into the genus Lontra, which includes American river otter species, including those found in Central and South America.
The North American river otter is a species of Least Concern. Habitat degradation, water pollution, and trapping (for their fur) are all threats river otters face.
References
https://en.wikipedia.org/wiki/North_American_river_otter
Macdonald, David W. (editor). (2006). The Princeton Encyclopedia of Mammals. Princeton, New Jersey: Princeton University Press.
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In the Water TOOB Set with River Otter Mini Figure
North American Wildlife TOOB Set with River Otter Mini Figure