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Smell and hygiene become problematic as otter feces as well as the food they drag into their dens are especially rank during the hot, humid weather. Despite the tediousness often associated with river otter trapping, those that are detail-oriented … These have hidden, underwater entrances for protection from predators, which makes them attractive to otters. North American river otter Lontra canadensis swimming in a dirty pond in Walton County, GA. The dens have entrances underwater so they can be easily accessed from the water. Its eyes are placed at the top of the head, so it can remain alert whilst the rest of the body is underwater. The river otter is a large, semi-aquatic member of the weasel family weighing from 9 - 41 pounds. The collective nouns for otters are bevy, family, lodge, romp (being descriptive of their often playful nature) or, when in water, raft.. They reach reproductive maturity at the age of 2 to 3 years. These otters have brown-to-gray fur, and their undersides are a lighter, silvery shade. After an absence of more than a century, its range is again extending into southern Minnesota. Author(s): Russell Link, Urban Wildlife Biologist. Discover the Chesapeake Field Guide Mammals River Otter. Lontra canadensis. It prefers to dine on fish, but also eats crayfish, and occasionally small mammals and birds. Otter dens feature numerous tunnels with easy access to water, especially for night hunting for fish, amphibians, crayfish and other aquatic delicacies. Preferring multiple resting places, these animals typically have more than one shelter in their home range, sometimes even denning in a hollow log. River Otter . General description: The otter is perfectly suited for an aquatic life. It establishes a burrow close to the water's edge in river, lake, swamp, coastal shoreline, tidal flat, or estuary ecosystems. Birthing and the raising of young takes place in a den near water. Sep 5, 2020 - Explore Kisscaden's board "river otter", followed by 275 people on Pinterest. You may choose to let otters occupy an area, such as under an outbuilding, if they don’t … River Otter populations shrank after European colonization, but Humboldt county’s otters remain … They communicate via whistles, twittering noises and spitting sounds, which can be heard at night when it is quiet and still. The playful North American river otter is equally at home in the water and on land. Females give birth, nurse, and care for their young in a den near the water. Find out more about this beautiful mammal. River Otters mate in late winter and early spring. In addition, an otter has a latrine that is separate from the main den. River otter dens are along the water in abandoned burrows or empty hollows. Their tails are long, thick and gradually taper at the point. Terminology. The park holds remnants of a vast cypress swamp that covered roughly 50,000 acres … By exploring the tabs below, you can learn more about river otters, about the work of the water management district to protect and restore … Otter … River otter become mature at 2 to 3 years old. Pups will open their eyes when they are one month old and are weaned when about 3 months old, starting to leave their birth range from 6 months to the age of one year. River otters have also been known to utilize the burrows made by red foxes, … The river otter’s sense of smell and hearing is acute. The river otter is a large, brown, weasel-like mammal found along the shores of the Chesapeake Bay and lakes, streams, rivers and marshes throughout the Bay watershed. Total body length of adult otters ranges from 35 - 54 inches, with long muscular tails accounting for 35 to 40 percent of the total length. Lifespan: In the wild River Otters live less than 10 … Fur coloration usually is dark brown on the back with a lighter belly and throat. Adult females care for their juvenile offspring, who disperse by the time the otters give birth again. Natural History and Observations of the River Otter Four female and three male otter were released at Muller. River otters spend equal amounts of time on land and water, and will build a den, called a holt, on the banks, or sometimes in the middle of their lake or stream. They … The most aquatic … The young, called kits, … They can even close their nostrils to keep water out during long … Introduction. Gestation takes 60 - 63 days once implantation of the embryos in the uterus occurs. In the mid-1990s, biologists with the Illinois Department of Natural Resources released 346 river otters from Louisiana in southeastern and central Illinois. 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