North American River Otter : Conservation
The North American River Otter is one species of otter that is not currently under threat, although it does have a smaller range in modern times than it used to. This is mainly due to the impact of human building and farming in the USA, which has led to some states having very little good otter habitat and lots of polluted river systems.
In a number of states in Canada and the USA otters are hunted and trapped for their fur, which is of course some of the finest fur in the animal kingdom. Although North American River Otters are not the rarest of otters, there isn't very good data on their population in most states, and so if trapping continues it is impossible to tell when they might become vulnerable.