It is recognized by its powerful neck and elongated body. The family group stays together for 6 months-1 year. Boomer came to CMA to be a social partner for Walle, a rescued and non-releasable otter, who was residing by himself at that time. The North American river otter (Lontra canadensis) is a semiaquatic mammal in the weasel family.While it may simply be called the "river otter" in North America (to distinguish it from the sea otter) there are other river otter species throughout the world. The playful North American river otter is equally at home in the water and on land. An adult North American river otter can weigh between 5.0 and 14 kg (11.0 and 30.9 lb). They tend … The Northern River Otter is found both in Canada and the United States. River otter reaches a … River Otter Facts. The diet of North American River Otters reflects their aquatic habits. Boomer, a North American river otter, was born in January 2018 and was transferred to CMA on October 15, 2018, from another animal care facility. They are highly adaptable animals so as long as they have access to enough food and water they can thrive. Numerous species and varieties of fresh and anadromous fishes are eaten, but shell-fish, crayfish, amphibians, and reptiles are also frequently eaten, as are several species of crabs in coastal marshes. https://wildlifenutritionriverotter.weebly.com/food-habits-and-diet.html The weight of a North American river otter measures around 5 – 14 kg (11 – 31 lb). Despite its common name, the North American river otter is equally comfortable in either coastal marine or freshwater habitats. They are active any hour (peak feeding dawn-midmorning, evening) and season. River Otters Are Found in Aquatic Habitats throughout North America North American River Otters Range Map. Otters are known for their playful activity. They inhabit both coastal regions and inland waterways. Often an otter will repeatedly slide down a muddy bank into the water much like a child at a water park. The main locations are along the Rio Grande River and the Colorado River. River otters can be found in Canada, the Pacific North West, the Atlantic States, and the Gulf of Mexico. The diet of the river otter throughout its range is primarily fish. The North American river otter is considered a medium to large sized otter, with adults ranging in length from 3 to 5 feet and weighing between 10 and 30 pounds. It makes its home in a burrow near the water's edge, and can thrive in river, lake, swamp, or estuary ecosystems. The male avoids the area of birth but rejoins the family while the young learn to swim. The river otter is protected and insulated by a thick, water-repellent coat of fur. The largest component of the diet is … River otters have quite a large range. Distribution. 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