Dens dug into banks with entrances underwater. There are few things in life more joyful than watching an otter just being an otter. River otters have a rich brown fur which is water repellant. The belly has a silvery sheen. There are 4 mammae.
Otter tails are fur covered, wide at the base but tapering down to a tip.
Otter's feet are webbed but with 5 distinct toes and a footpad on each foot. Otters possess 36 teeth with which they dine on fish, frogs, crayfish and other aquatic invertabrates. Entrances are underwater. Otters usually confine themselves within a homerange of 15 miles. Otters are playful animals that are fond of transforming muddy or icy banks into slides.