Otter

- Scientific name: Lutra lutra
- Endangered Wildlife Class I, Natural Monument No. 330
- Classification System: Mammalia > Carnivora > Mustelidae

It is a mammal classified under the family of Mustelidae. Its body length is 64 to 71 cm, and the length of the tail is about 39 to 49 cm. Its whiskers are around its mouth and function as antennae. It feeds on fish, and has well-developed fangs and a keen sense of smell. They are characterized by short limbs and webbing between the toes, adapted to their aquatic life.