They are Mammals as they give birth to live babies and are warm-blooded animals. In March or April, from 1 - 6 young are born in a leaf- and grass-lined den constructed in an old muskrat lodge, abandoned burrow, or hollow tree close to a water source. The reproductive cycle in California sea otters is about 12 months. Emma Lynch Reasons for success River otters can be found in streams, lakes and wetlands along marine coasts in all Otter births occur most frequently in March or April. The river otter has a long, streamlined body with dense brown fur. Answer. Reproductive Cycles Reproductive patterns vary considerably between species and locations. The female Otter gives birth to live pups and take care of them until they are 6 months old. Despite these large ranges, river otters are only slightly territorial and generally practice mutual avoidance. As a result we do know quite a bit about these animals. An adult river otter has a total of 36 teeth. box-shadow: none !important; River Otters breed in the winter or early spring. They first learn to swim after about two months. Life Span - 10 – 11 years Life Stage. Karcher Bernard Investments Inc. Investment Management Investments Investment Advisory Service. After mating, a delay of 290 - 380 days occurs before the actual development of embryos begins. Though they have few predators outside of humans, they can scoot away from danger on land at a speed of 18 miles per hour. Life Cycle:River otters reach sexual maturity when they are two years or older. … They're not slow creatures. Life span - Northern river otters have lived at least 16 years in captivity . Empower Her. (68.58 – 76.2 cm) head and body; 13 – 17 in. Search, discover, and learn about wildlife. They open their eyes at one month of age and are weaned at about 3 months old. The small, helpless, blind young are called pups. River Otters Are Found in Aquatic Habitats throughout North America North American River Otters Range Map. The recognizable long, slender body is built for sliding down muddy river banks and snowy hills. The long-tailed weasel is smaller (total length to 11½ inches), brown above, and whitish below (not all brown). Life Cycle Enimies Fun Facts Introduction: Otters are part of the Mammal family and live in groups. YEARS IN BUSINESS. Otter creates smart voice notes that combine audio, transcription, speaker identification, inline photos, and key phrases. Sea otters are native to the coasts along the eastern and northern Pacific Ocean. Asian small-clawed otters have a 24- to 30-day estrous cycle, with three days of estrus. Otters are not a threat to fisheries or popular fishing spots as once believed. It makes its home in a burrow near the water's edge, and can thrive in river, lake, swamp, or estuary ecosystems. Life Span - 10 – 11 years Life Stage. There has been plenty of research relating to Otters over the years. 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. They measure 3 feet to 4 feet from head to tail and weigh 7 pounds to 31 pounds. They may migrate as a result of food shortages or environmental conditions, but they do not migrate annually. River otters reach maturity around two years of age. Grooming is a frequent … They live in wet … Reproduction and Life Cycle Males and female river otters usually become sexually mature at two years and typically breed from December to April. An adult river otter has a total of 36 teeth. !function(e,a,t){var r,n,o,i,p=a.createElement("canvas"),s=p.getContext&&p.getContext("2d");function c(e,t){var a=String.fromCharCode;s.clearRect(0,0,p.width,p.height),s.fillText(a.apply(this,e),0,0);var r=p.toDataURL();return s.clearRect(0,0,p.width,p.height),s.fillText(a.apply(this,t),0,0),r===p.toDataURL()}function l(e){if(!s||!s.fillText)return!1;switch(s.textBaseline="top",s.font="600 32px Arial",e){case"flag":return!c([127987,65039,8205,9895,65039],[127987,65039,8203,9895,65039])&&(!c([55356,56826,55356,56819],[55356,56826,8203,55356,56819])&&!c([55356,57332,56128,56423,56128,56418,56128,56421,56128,56430,56128,56423,56128,56447],[55356,57332,8203,56128,56423,8203,56128,56418,8203,56128,56421,8203,56128,56430,8203,56128,56423,8203,56128,56447]));case"emoji":return!c([55357,56424,55356,57342,8205,55358,56605,8205,55357,56424,55356,57340],[55357,56424,55356,57342,8203,55358,56605,8203,55357,56424,55356,57340])}return!1}function d(e){var t=a.createElement("script");t.src=e,t.defer=t.type="text/javascript",a.getElementsByTagName("head")[0].appendChild(t)}for(i=Array("flag","emoji"),t.supports={everything:!0,everythingExceptFlag:!0},o=0;o