Habitat
Description

Distribution

Reproduction

Habitat


Nutrition and Predators


Literature Cited


Northern river otters are generally most abundant along food-rich coastal areas, such as the lower portions of streams and rivers and in estuaries, and in areas having extensive nonpolluted waterways and minimal impact by humans (Tabor and Toweill, 1982). One of the main reasons the otter’s water habitat is important is for reproduction. The otter occasionally has two dens, one for resting and another for nesting. Most dens are found under tree roots, rock piles, logs, or thickets… sometimes even a beaver lodge or muskrat den that has been vacated" (Texas Parks & Wildlife, http://www.nsrl.ttu.edu/tmot1/lutrcana.htm ).

"Family groups (of northern river otters) consisting of an adult female and her young were found to utilize an area about seven km in diameter during a year, with the diameter increasing from three to four km to the full width as the pups mature. Male otters were found to occupy home ranges much more extensive and variable in size than those of females. Home range areas of males averaged about fifteen km in width but were highly variable in length, owing to individual differences, topography, and occurrence of other otters (especially males) (Tabor and Toweill, 1982).