Females generally begin reproducing at the age of two. They're not slow creatures. Bobcats, alligators, coyotes, raptors, and other large predators will sometimes prey on North American river otters. Although river otters tend to move along waterways, they may travel overland to reach a different watershed. See more ideas about River otter, Otters, Sea otter. River otters eat a variety of aquatic wildlife, such as fish, crayfish, crabs, frogs, birds’ eggs, birds and reptiles such as turtles. In Kentucky, river otters are the largest members of the Mustelidae family, which also includes skunks, weasels, and mink. The specific life cycle for E. alarioides is unknown; however, it is possible that it is transmitted to river otters through burbot or other food fish. Weaning occurs at about 91 days of age . After about a month, their eyes are open and they begin exploring the den. They first learn to swim after about two months. Their eyes do not open until they are at least three weeks old. Common Name: Sea otter; Scientific Name: Enhydra lutris; Type: Mammals; Diet: Carnivores; Average Lifespan in the Wild: Up to 23 years; Average Size: 4 feet; Average Weight: 65 lbs; Group Name: Raft; Gestation Period: 4 to 5 months ; Habitat: Waterways of all continents except Australia and Antarctica. Extension   /   North American River otters typically have 1 or 2 offspring at a time. Provided it survives its first year of life, a typical North American river otter will live to the age of 12, with some surviving longer. document.oncontextmenu = nocontext; In early spring, expectant … (33.02 – 43.18 cm) tail; 12 – 25 lbs. Distribution & Habitat The otter is a secretive semi-aquatic species which was once widespread in Britain. The tail makes up about a third of their total length. River otters breed in late winter or early spring. North American river otters are polygynous. img.wp-smiley, Otters are ready to reproduce when they are from 2 to 3 years of age. padding: 0 !important; They uses their long whiskers to detect prey underwater. © 2021 WILD SKY MEDIA. The dens have entrances underwater so they can be easily accessed from the water. Life Cycle. The playful North American river otter is well adapted for semi-aquatic living. 2008-05-13 02:41:18 2008-05-13 02:41:18. The playful North American river otter is equally at home in the water and on land. Lanny McDowell River Otter Lontra canadensis These nocturnal animals are elusive inhabitants of Island ponds. 11. Males are more solitary or spend time with other males. Also known as Lontra Canadensis, the North American river otter has a playful nature that captures the attention of those fortunate enough to watch. River otters mature at age 2. (68.58 – 76.2 cm) head and body; 13 – 17 in. On land, they lope or bound. North American river otters have long whiskers, which they use to detect prey in dark or cloudy water, and clawed feet for grasping onto slippery prey. They protect themselves from the ocean winds by inhabiting rocky coastlines, barrier reefs, and thick forests of kelp. Top carnivores at Island ponds, otters eat small fish River Otters Are Opportunistic When Selecting Dens River Otter Holt. Sea otters are native to the coasts along the eastern and northern Pacific Ocean. A river otter's life begins in an unusual way. Christiana Emergency Medicine Residency, The pups are blind, toothless, and tiny, weighing about 5 … River otters feed mostly on fish but will also eat frogs, crabs, crayfish, and small mammals such as young muskrats. River otters communicate with whistles, yelps, growls, and screams, as well as touch and body posture. Fe­males give birth to from 1 to 6 young per lit­ter, with an av­er­age of 2 to 3, in a den near the water. Watercress Recipes Hawaii, Empower Her. The estuary is very pretty consisting of a variety of habitats including salt marsh, reed beds, low-lying meadows and pastureland. 2008-05-13 02:41:18 2008-05-13 02:41:18. Reproduction and Life Cycle Males and female river otters usually become sexually mature at two years and typically breed from December to April. [1] The number of corpora lutea increases directly with age. //