| Description Distribution
Reproduction
Habitat
Nutrition and Predators
Literature Cited
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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 otters 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).
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