Incredible mammals | Otters

Otter fur is so dense that there are up to 125,000 thousand hairs per square centimeter of the skin. This helps her to keep warm and not get wet.
Despite the fact that the otter's hole is dug in the ground, the only entrance to it is always located below the surface of the water, and you can only get inside from the river.
An otter can sleep right in the water. In order not to be carried away by the current, she first climbs into the algae thickets and wraps herself with them. Thus, algae serve as an anchor for it.
In winter, otters sometimes ride from snow—covered hills - they lie down on their stomachs, push off, lift up their paws and roll down right on a fluffy belly, like children on a sled.
Otters, unlike the vast majority of animals, can swim on their backs.
Sometimes you can see how otters frolic in the water and seem to dance. In fact, this is how they are washed from the stuck dirt.
These animals live only in fresh water.
Otters raised in the wild are extremely wary of humans, but if you raise this animal from childhood, it becomes tame quite easily.
Otter cubs are called puppies.