Japanese River Otter (Lutra nippon)
The Japanese River Otter inhabited the rivers on the islands of Honshu, Kyushu and Shikoku in Japan; it was formerly thought to be a subspecies of the Eurasian River Otter (Lutra lutra (L.)).
The species was last seen in 1979 and is now considered extinct.
*********************
edited: 01.08.2022