Semi-aquatic mammals (freshwater)

Otter

Otter

Lutra lutra

Otters are highly adapted aquatic hunters, who are related to badger and pine marten, and are one of the most eagerly sought, yet elusive mammals in Scotland. They are usually a shade of light brown, which can look darker when wet. They have a streamli...

Water vole

Water vole

Arvicolla terrestis

This large rat-sized vole lives along a range of watercourses. The signs of vole activity include holes of around 50mm diameter connected with worn runs through waterside vegetation and characteristic prominent toilet sites, with greenish rice shaped dung...