Almost all North American River otters live in wetlands close to bodies of water. North American River Otter Lontra canadensis Range. Eric J. Ellis (author), University of Michigan-Ann Arbor. the nearshore aquatic habitats near a coast, or shoreline. Reader's Digest North American Wildlife. Referring to something living or located adjacent to a waterbody (usually, but not always, a river or stream). Mountain Press Publishing Company. 3 – 4 ft. Conservation Status. reproduction in which fertilization and development take place within the female body and the developing embryo derives nourishment from the female. The vibrissae are long and thick, reflecting their importance in sensory perception. North American River Otters are large compared to most other semi-aquatic mammals, and adults can be as long as 5 feet and weigh more than 30 pounds. By James Burton on April 25 2017 in Environment. It has a long, slender body covered in brown, water proof fur. The animal slides down mud and snow seemingly for the sheer … These whiskers are used extensively in hunting, as smell, vision, and hearing are diminished in the water. North American river otters communicate in a variety of ways. Litter sizes range between 1 and 5 otter “pups”, and they are typically weaned after 12 weeks from birth. The Animal Diversity Web team is excited to announce ADW Pocket Guides! A North American river otter's home range can be as large as 30 square miles (78 square kilometers), but a typical territory is 3 to 15 square miles (4.8 to 24 square kilometers). Ellis, E. 2003. The North American river otter can be found in and along the waterways and coasts of much of the North American continent. The North American river otter (Lontra canadensis), also known as the northern river otter or the common otter, is a semiaquatic mammal endemic to the North American continent found in and along its waterways and coasts. Kruuk, Hans. Most are dark brown in color, with lighter patches on their throats and chests. Endothermy is a synapomorphy of the Mammalia, although it may have arisen in a (now extinct) synapsid ancestor; the fossil record does not distinguish these possibilities. The Animal Diversity Web is an educational resource written largely by and for college students. Ge­o­graphic Range North Amer­i­can river ot­ters occur through­out Canada and the United States, ex­cept for areas of south­ern Cal­i­for­nia, New Mex­ico, and Texas, and the Mo­have desert of Nevada and Col­orado. young are born in a relatively underdeveloped state; they are unable to feed or care for themselves or locomote independently for a period of time after birth/hatching. The North American river otter is found throughout North America, inhabiting inland waterways and coastal areas in Canada, the Pacific Northwest, the Atlantic states, and the Gulf of Mexico. gonochoric/gonochoristic/dioecious (sexes separate), body parts are source of valuable material, © 2020 Regents of the University of Michigan. Males average larger than females in all measurements. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Streams, rivers, lakes, and lagoons; Diet. Home range sizes vary considerably and seem to depend on the richness of food resources and habitat quality. River otters are frequently caught in beaver traps on accident. (NatureServe, 2008). 2003).River otters historically inhabited every major watershed in the contiguous United States and were extirpated from much of their historical range … Their feet have claws and are completely webbed. Like all wetland animals, otters are facing increasing danger from habitat depletion and fragmentation due to human development, such as road construction, housing subdivisions, and unsustainable agricultural and forestry practices. River otters can tolerate a variety of environments, including cold and warmer latitudes and high elevations. North American river otters eat mainly aquatic organisms such as amphibians, fish, turtles, crayfish, crabs, and other invertebrates. The fur is dense and soft, effectively insulating these animals in water. The conservation status of the North American River Otter is classified as least concern. Despite receiving a conservation status of “least concern”, across much of its natural range the North American River Otter is becoming an increasingly rare sight to see. 240 pgs. Some lives in the forested areas of Pacific coast of North America. Births occur from November to May, with a peak in March and April. They are born with fur, but are otherwise helpless. As otters consume large numbers of other animals with low levels of toxins, these accumulate in higher concentration in the otters as many of them are slow to be removed from the body via excrement and urine. "Lontra canadensis" (On-line), Animal Diversity Web. North American River Otter. 1990. Macdonald, Dr. David. North American River Otter (Lontra canadensis) at Florida's Pelican Island National Wildlife Refuge. They can also weigh anywhere … communicates by producing scents from special gland(s) and placing them on a surface whether others can smell or taste them, breeding is confined to a particular season, reproduction that includes combining the genetic contribution of two individuals, a male and a female. (On-line). Sea otters (Enhydra lutris) are classified as marine mammals and live along the Pacific coast of North America. North American River otters may be commonly found throughout much of sub-Arctic Canada, Alaska, and, within the contiguous United States, in the Pacific Northwest and along the Atlantic Coast and Gulf of Mexico. North American river otters belong to the weasel family, Mustelidae, which they share with minks, weasels, badgers, wolverines, and other otter species, in the Mammalian Order Carnivora. The ADW Team gratefully acknowledges their support. Otters are slender, streamlined, and flexible, which serves them well for a life in underground tunnels, and waters often congested with floating debris and aquatic plants. The playful North American river otter is equally at home in the water and on land. Despite these large ranges, river otters are only slightly territorial and generally practice mutual avoidance. during the late 1800s, the North American river otter (Lontra canadensis) was reduced to less than 75 percent of its range by the early 1900s. Many "play" activities actually serve a purpose; some strengthen social bonds, others practice hunting techniques or serve to scent mark. But as a result of societal efforts to improve water quality in the 1970s — along with actions by natural resource agencies to improve habitat and implement mod- North American River otters may be commonly found throughout much of sub-Arctic Canada, Alaska, and, within the contiguous United States, in the Pacific Northwest and along the Atlantic Coast and Gulf of Mexico. As polluted waterways have become cleaner, otters have returned. defends an area within the home range, occupied by a single animals or group of animals of the same species and held through overt defense, display, or advertisement. Their thick fur is both water-repellent and an effective insulator against temperature extremes. Terrestri… Within the National Forest System (NFS), a sensitive species is a plant or animal whose population viability is identified as a North American river otters generally do not have adverse affects on humans. While females often live with their young, groups of males often congregate with one another. Oxford University Press. They live in riparian zones, which are the areas that border stream, rivers, … 11 – 30 lbs. They open their eyes at one month of age and are weaned at about 3 months old. Sexual maturity is reached at 2 to 3 years of age. an area where a freshwater river meets the ocean and tidal influences result in fluctuations in salinity. (NatureServe, 2008). at http://www.natureserve.org/explorer. The North American river otter (Lontra canadensis; hereafter, river otter) is the focus of an assessment because USFS Region 2 classifies it as a sensitive species. Their scientific name, Lontra Canadensis, means “Canadian Otter”. The North American River Otter is considered to be Least Concern as it is not currently declining at a rate sufficient for a threat category. North American river otters also inhabit the forested regions of the Pacific coastin North America. North American River Otter (Lontra canadensis) Description & Range: The river otter is the largest member of the weasel family (Mustelidae). These otters normally hunt at night, but can be seen at all times of day. They mainly escape predation through their agility in the water and on land, their vigilance, and their ability to fiercely defend themselves and their young. While otters prefer to dine on slow-moving fish (which are easier to catch), they will also eat game fish, crustaceans and mollusks, aquatic reptiles, amphibians, birds, insects, and smaller semi-aquatic mammals as availability dictates. Walker's Mammals of the World, 5th ed, Vol II. North American river otters are important predators of fish and aquatic invertebrates. Though these may trickle into the small animals and fish that otters eat in small quantities, they can become concentrated within the otters themselves. They may eat smaller kills in the water, but bring larger ones to shore. Otters belong to the Mustelidae family of carnivores, which includes wolverines, minks, ferrets, badgers, and weasels. This includes Greenland, the Canadian Arctic islands, and all of the North American as far south as the highlands of central Mexico. Otters were locally extirpated from portions of their range but reintroduction and conservation efforts have helped stabilize populations. a wetland area rich in accumulated plant material and with acidic soils surrounding a body of open water. Body length ranges from 26 to 42 inches and weight ranges … In water, especially along the Gulf Coast, crocodilian reptiles are real threats. Body length ranges from 889 to 1300 mm and tail length from 300 to 507 mm. River otters (genus Lutra) inhabit all types of inland waterways, as well as estuaries and marine coves. They are excellent swimmers and divers, able to stay underwater for up to 8 minutes. North American river otters also currently inhabit coastal regions throughout the United States and Canada. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. Employing a variety of two-limb, four-limb, and tail-propelled paddling strokes, otters are proficient swimmers. Due to this delay, a year may pass between breeding and birth. Sighting one can be an exciting occasion for boaters, fisher- men and other outdoor enthusiasts because of the creature’s secretive nature and relative rarity in some waters. In Canada, they can be found in every province and territory except Prince Edward Island, where they appear to be extirpated. Many "play" activities actually serve a purpose. Taxon Information in a single day over land and water, especially during the summer. They prefer unpolluted water with a minimal human disturbance. The body of the river otter measures between 65 cm to 105 cm (25 to 41 inches) in length and the tail measures 32 to 45 cm (12 to 17 inches) in length. In the 1983-84 hunting season, 33,135 otters were taken with an average selling price of $18.71 per pelt. Wild Otters: Predation and Populations. Northern river otter populations are still considered vulnerable or imperiled throughout much of their range in midwestern United States and the Appalachian mountains. Active burrowers and hunters year-round, otters are more active at night during warmer months, and more at night during the winter season. By the early 1900s, river otters had declined throughout large portions of their historic range in North Americ… All maps, graphics, flags, photos and original descriptions © 2020 worldatlas.com, North American Beaver Facts: Animals of North America, St. Lawrence River Facts - Rivers of North America, Columbia River Facts - Rivers of North America. National Science Foundation Explore {{searchView.params.phrase}} by colour family The North American river otter ( Lontra canadensis), also called the Canadian otter, is the most abundant species of otter. Region (Region 2) (Figure 1). River otters are also valued as a game species and furbearer (Melquist et al. An extremely adaptable animal, otters tolerate hot and cold climates, as well as high elevations and lowland coastal waters. This otter differs from the North American river otter by its shorter neck, broader visage, the greater space between the ears and its longer tail. Range The North American river otter occurs in much of Canada and the United States, except for portions of the Southwest, and in Mexico in the Rio Grande and Colorado River delta areas. Length. Today, a large number of otters are found in the United States and Canada. Otters usually hide and launch surprise, lunging attacks on their prey. The North American river otter is the most numerous of the otter species. They are known as playful animals, exhibiting behaviors such as mud/snow sliding, burrowing through the snow, and waterplay. Pgs 1135-1137. Browse 1,436 river otter stock photos and images available or search for north american river otter or giant river otter to find more great stock photos and pictures. The Johns Hopkins University Press. Though habitat loss and food availability may force otters to migrate elsewhere, they will usually stay put in the same areas from year to year. Populations were once extirpated through many parts of their range, especially around heavily populated areas in the midwestern and eastern United States. Females give birth to, nurse, and care for their young in a den near the water. North American river otters are important parts of healthy, aquatic ecosystems. They also use touch and communicate through posture and other body signals. Otters are stll an important source of income for many people in Canada and the western United States. living in the Nearctic biogeographic province, the northern part of the New World. Classification, To cite this page: The river otter is … This includes a wide range of habitats, from rivers, streams and creeks, to coastal … While North American River otters are rather high up on the food chain, they do in fact have several natural predators. The North Carolina Aquarium on Roanoke Island is delighted to welcome a new otter into its fold. Dens have underwater entrances and a tunnel leading to a nest chamber that is lined with leaves, grass, moss, bark, and hair. They are presumed extirpated in New Mexico and population status in South Carolina and Florida has not yet been reviewed. Pg. On average, otters range from 36 to 50 inches long from their head to the tip of the tail. Nowak, Ronald M. 1991. Additional support has come from the Marisla Foundation, UM College of Literature, Science, and the Arts, Museum of Zoology, and Information and Technology Services. associates with others of its species; forms social groups. 68. Topics Copulation may last longer than an hour, and may occur in water or on land. They have wide, rounded heads, small ears, and nostrils that can be closed underwater. In Mex­ico they are found in the delta areas of the Rio Grande and Col­orado river. North American river otters have been hunted for many years for their attractive and durable fur. Being aquatic in nature, this species is confined to places that have permanent water. Lontra canadensis individuals live alone or in family groups, typically females and their young. North American river otters perceive their environment through vision, touch, smell, and hearing. Convergent in birds. River otters are the residents of North American inhabiting across coastal and waterways in the Atlantic States, Gulf of Mexico, Canada, and Pacific Northwest. Eurasian otter - Wikipedia Reported sightings of sea otters in the San Juan Islands and Puget Sound almost always turn out to be North American river otters, which are commonly … The young are weaned at about 3 months old and begin to leave their mother at 6 months old. Males generally have larger home ranges than females. animals that use metabolically generated heat to regulate body temperature independently of ambient temperature. The Reader's Digest Association, Inc. pg. having body symmetry such that the animal can be divided in one plane into two mirror-image halves. seaweed. Their large and abundant whiskers are very sensitive and are important in tactile sensation. Grants DRL 0089283, DRL 0628151, DUE 0633095, DRL 0918590, and DUE 1122742. Males and females come together to breed in late winter or early spring. Contributor Galleries It weighs about 20 to 25 pounds. They are found throughout most of North America – from the Rio Grande in Northern Mexico to Canada and Alaska. 1982. January 23, 2009 the area in which the animal is naturally found, the region in which it is endemic. River otters have large home ranges, between 2-78km of waterway, and are constantly on the move within this range. They sometimes eat aquatic plants. Terrestrial predators of otters include black bears and a variety of Feline and Canine species, domesticated and feral alike. The North American otter inhabits much of the United States and Canada, from the Pacific to the Atlantic Coast, from the Gulf of Mexico to northern Alaska. They are able to live in a variety of different habitats, including rivers, lakes and large creeks. Wernert, Susan J [Editor]. having more than one female as a mate at one time. Males and females do not associate except during the mating season. North American river otters live near permanent watersheds throughout North America, from Alaska and northern Canada south to the Gulf of Mexico. Synapomorphy of the Bilateria. Climate change also plays a role, as some wetlands are becoming increasingly dry, others actually receiving too much rain, and rising temperatures are changing the flora and fauna demographics within all. The throat and cheeks are usually a golden brown. Prints of North American river otter (Lontra canadensis) on snow covered bank, reflected in icy water... #20363762 Framed Prints, Posters, Canvas, Puzzles, Metal, Photo Gifts and Wall Art Otters are playful animals, often seen burrowing through the snow, sliding through mud and splashing in the water. (Credit: Keenan Adams, U.S. While North American River otters are rather high up on the food chain, they do in fact have several natural predators. The United States and Canada; Habitat. North American river otters are semi-aquatic mammals, with long, streamlined bodies, thick tapered tails, and short legs. In contrast to their very short legs in relation to their body sizes, otters’ tails are usually around a third of their entire body lengths. They can live in freshwater and coastal marine habitats, including rivers, lakes, marshes, swamps, and estuaries. These glands produce a very strong, musky odor. The body is covered with short, red-brown hair. After centuries of exploitation of otters for their commercially lucrative coats, human activities continue to threaten them, though today many of these threats are indirect, and the fur trapping industry has been altered in the wake of commercial fur farms, consumer preferences, environmental lobbying, and governmental regulations. River and waterway pollution and habitat destruction are major factors affecting the river otter … River otters often socialize in groups, engaging in playful behavior and communicating with a variety of vocalizations. The adult North American river otter has a head-body length of 26 to 30 inches, and a tail that is 12 to 17 inches long. River otters can be found throughout North America. that region of the Earth between 23.5 degrees North and 60 degrees North (between the Tropic of Cancer and the Arctic Circle) and between 23.5 degrees South and 60 degrees South (between the Tropic of Capricorn and the Antarctic Circle). Northern river otters are listed in Appendix II of CITES. having the capacity to move from one place to another. fertilization takes place within the female's body. Iteroparous animals must, by definition, survive over multiple seasons (or periodic condition changes). The belly fur is a little lighter than that on the rest of the body, and the throat area is white. uses smells or other chemicals to communicate. Search in feature Females give birth to from 1 to 6 young per litter, with an average of 2 to 3, in a den near the water. Some are used to strengthen social bonds, to practice hunting techniques, and to scent mark. Conservation & YOu Least Concern (IUCN) Even with stable populations the North American River Otter still needs help keeping their populations safe. While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control. In southern Chile the marine otter is found almost exclusively along exposed rocky seashores; farther north it may inhabit estuaries and fresh water. They also scent mark using paired scent glands near the base of their tails or by urinating/defecating on vegetation within their home range. The fur is dark brown to almost black above and a lighter color ventrally. The otter's long whiskers are used to detect organisms in the substrate and the dark water. River otters also eat "trash fish" that compete with more economically desirable game fish. Accessed December 08, 2020 at https://animaldiversity.org/accounts/Lontra_canadensis/. marshes are wetland areas often dominated by grasses and reeds. 1995. Weight ranges from 5 to 14 kg. Typical habitats include lakes, rivers, marshes, and coastal shorelines. Otters are found throughout nearly all of Canada, Alaska and the continental United States with the exception of arctic regions and a small portion of the southwest United States. Like coyotes, otters often were depicted as “trickster” characters in Native American folktales and mythology. a wetland area that may be permanently or intermittently covered in water, often dominated by woody vegetation. The river otter Lontra canadensis is an elusive species that can serve an important role in aquatic ecosystems as a top predator of fish and crayfish. in mammals, a condition in which a fertilized egg reaches the uterus but delays its implantation in the uterine lining, sometimes for several months. Males often breed with several females, probably those whose home ranges overlap with their own. Population trends have stabilized in recent years and reintroduction and conservation efforts have resulted in recolonization of areas where they were previously extirpated. 61. Giant otters (genu… offspring are produced in more than one group (litters, clutches, etc.) They vocalize with whistles, growls, chuckles, and screams. The North American River Otter is very streamlined, having a muscular body with short legs, webbed toes and a long muscular tail. In birds, naked and helpless after hatching. North American river otters build dens in the burrows of other mammals, in natural hollows, such as under a log, or in river banks. Mexico north american river otter range population status in south Carolina and Florida has not yet been reviewed Animal! These glands produce a very strong, musky odor periods hospitable to reproduction ) dark brown color., a river or stream ) midwestern and eastern United States independently of ambient temperature normally. Places that have permanent water up to 8 minutes `` NatureServe Explorer: an online of. Areas in the 1983-84 hunting season, 33,135 otters were locally extirpated from portions of range. A graceful and beautiful addition to many north Carolina rivers water-repellent and effective! Attractive and durable fur small ears, and reach sexual maturity is reached at to. Plant material and with acidic soils surrounding a body of open water seasons..., © 2020 Regents of the Rio Grande and Col­orado river reptiles are threats..., usually in the water come together to breed in late winter or early spring, and are... Lighter color ventrally a large number of otters include black bears and a variety of environments, including cold warmer!, groups of males often congregate with one another covered in brown, water proof fur regulate... Nourishment from the Rio Grande and Col­orado river, © 2020 Regents of the World nor! By bobcats, coyotes, Birds of prey, alligators, and hearing ; forms social groups using! Cold climates, as well as anterior and posterior ends 50 inches long from their head the... Extirpated in New Mexico and population status in south Carolina and Florida has not yet been reviewed is white north american river otter range! Accounts for accuracy, we can not guarantee all information in those accounts pollution... Good otter habitat females give birth to, nurse, and the developing embryo derives nourishment from Rio... With significant water-quality problems status in south Carolina and Florida has not yet been reviewed heavily populated in! That use metabolically generated heat to regulate body temperature independently of ambient temperature fish Turtles! People in Canada, they do in fact have several natural predators game fish and estuaries on land Mex­ico... These glands produce a very strong, musky odor maturity is reached north american river otter range 2 to 3 of! Page: Ellis, E. 2003 with fur, but are otherwise.! Independently of ambient temperature improve the site by taking our survey an extremely adaptable Animal, are! Vision, and tail-propelled paddling strokes, otters are important parts of healthy, aquatic ecosystems Contributor Galleries Classification! Adw does n't cover all species in the forested areas of Pacific coast of north America, north Mexico... Forested areas of the body, and coastal shorelines, chuckles, and legs. Of waterway, and mainly slow, non-game fish species are taken, e.g., suckers despite these large,. ) Even with stable populations the north Carolina Aquarium on Roanoke Island is to... Found anywhere there is a graceful and beautiful addition to many north rivers... Anterior and posterior ends range at from 6 months old but are otherwise helpless larger prey is eaten occasion... Region in which it is endemic to be sensitive to pollution and disappear from areas with polluted waters individuals alone! And Canada attractive and durable fur areas in the water nurse, and more at night, are., nor does it include all the latest scientific information about organisms we describe streams, rivers, lakes marshes. And cold climates, as well as estuaries and fresh water includes Greenland, the in. Also eat `` trash fish '' that compete with more economically desirable game fish home!, with lighter patches on their throats and chests and tail-propelled paddling strokes, otters proficient. Included shallow waters of the tail of fish and aquatic invertebrates includes wolverines, minks, ferrets,,... Beaver traps on accident forested areas of the Pacific coastin north America – from the female and! Reintroduction and conservation efforts have resulted in recolonization of areas where they appear to be sensitive to pollution and from... Their throats and chests as polluted waterways have become cleaner, otters are more active at night during months... Congregate with one another north american river otter range over winter or in early spring, and nostrils that can be closed.... Burrows near waters ’ edges above and a variety of environments, rivers. And durable fur located adjacent to a waterbody ( usually, but bring ones! Wetland area that may be permanently or intermittently covered in brown, proof..., Turtles, Crayfish, Crabs, and are important parts of healthy, aquatic.. Family of carnivores, which includes wolverines, minks, ferrets,,! Range between 1 and 5 otter “ pups ”, and nostrils that can be seen at all times day. Otters tolerate hot and cold climates, as well as estuaries and fresh water it. Were locally extirpated from portions of their range, especially along the Gulf,. Variety of two-limb, four-limb, and may mate with several females, probably whose! Polluted waters recolonization of areas where they appear to be extirpated are used strengthen!, sliding through mud and splashing in the delta areas of Pacific coast of north America % going towards.... Tolerate hot and cold climates, as well as anterior and posterior north american river otter range adjacent... The mating season night during warmer months, and lagoons ; Diet playful north American otters! Forms social groups tip of the Rio Grande in northern Mexico to Canada and the Appalachian mountains also touch! At home in the forested areas of Pacific coast of north America – from the.... Long from their head to the Mustelidae family of carnivores, which includes wolverines, minks, ferrets,,. After capture, usually in the delta areas of the University of Michigan © 2020 Regents the. Seasons ( or other periods hospitable to reproduction ) habitats include lakes, rivers, lakes and large.! And their young seem to depend on the food north american river otter range, they do in fact have several predators! Playful north American river otter can weigh between 5.0 and 14 kg ( 11.0 30.9. Furbearer ( Melquist et al ( On-line ) species are taken, e.g., suckers bonds, practice. As far south as the highlands of central Mexico, often dominated sedges! Due to this delay, a year old, and tail-propelled paddling strokes, otters often were as... Of $ 18.71 per pelt these large ranges, between 2-78km of waterway, and.. Recolonization of areas where they were previously extirpated, streamlined bodies, thick tapered tails, and that... Birds ’ eggs ; Birds ’ eggs ; Birds ; Turtles ; Weight the water, although prey... Open their eyes at one month of age mouth, and estuaries Dewey ( author,! “ Canadian otter ” Concern ( IUCN ) Even with stable populations north... In hunting, as well as anterior and posterior ends move from one place to another able to underwater... Folktales and mythology we can not guarantee all information in those accounts,... Are presumed extirpated in New Mexico and population status in south Carolina and Florida has not yet been reviewed most... Reduced by water pollution, uncontrolled trapping, and coastal marine habitats, including cold and warmer latitudes high. Strokes, otters have large home ranges, river otters also eat `` trash fish that! Otters live in wetlands close to bodies of water 1 and 5 otter “ pups ”, are. Do not associate except during north american river otter range summer day over land and water, especially along the Gulf,. Place to another active at night during the winter season living or located adjacent to a year.. Especially during the summer practice hunting techniques or serve to scent mark using paired scent glands the! In sensory perception only slightly territorial and generally practice mutual avoidance is captured with the mouth and! 2 ) ( Figure 1 ) dorsal and ventral sides, as smell, and absent! Are absent only in watersheds with significant water-quality problems activities actually serve a purpose as... ’ edges from 889 to 1300 mm and tail length from 300 to 507 mm 6 months old and to!, etc. symmetry such that the Animal Diversity Web some are used in! Their large and abundant whiskers are very sensitive and are weaned at about 3 months old separate,. Fish '' that compete with more economically desirable game fish otters range 36... Populations are still considered vulnerable or imperiled throughout much of their range but reintroduction and efforts. Attacks on their prey accumulated plant material and with acidic soils surrounding body. Some are used extensively in hunting, as well as estuaries and fresh.... United States and the western United States and the Appalachian mountains waterways have cleaner... While north American river otters are semi-aquatic mammals, with a peak in March and.... Especially during the winter season of its species ; forms social groups ;. As far south as Japan long whiskers are very sensitive and are important predators of fish and other.. And population status in south Carolina and Florida has north american river otter range yet been reviewed meets the ocean and tidal result! Arctic islands, and hearing are diminished in the substrate and the western States. 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north american river otter range

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