European otter; Eurasian otter; common otter
Refers specifically to the species Lutra lutra, the Eurasian otter, as distinct from other otter species.
The Eurasian otter is widely distributed from Europe to Asia.
You can see Eurasian otters at this zoo.
Compound of ユーラシア (Eurasia) and 川獺 (otter), a direct translation of the English 'Eurasian otter'.