01 / Otter of the Shinjo River (新荘川のカワウソ)
After being last confirmed on the Shinjo Riverin 1979, none has been sighted in Japan.

In 1974, a Japanese otter was confirmed living on the Shinjo River. The city writes that there has been no sighting in Japan since the one confirmed in 1979. With this otter, the last confirmed living on the Shinjo River, as its symbol, the city works toward an environmentally friendly town.
- 1974: confirmed on the Shinjo River
- 1979: last confirmation on the Shinjo River
- "Town of the otter" in the Citizens' Charter


