Water vole (Arvicola terrestris) at burrow entrance, surrounded by a closely cropped lawn, eaten by the herbivorous rodents, United Kingdom, Europe

Water vole (Arvicola terrestris) swimming at the surface of a pond, British Wildlife Centre, Surrey, England, United Kingdom, Europe

Water vole (Arvicola amphibius), Devon, England, United Kingdom, Europe

Water vole (Arvicola terrestris). Alston Moor, Cumbria, UK

Water vole (Arvicola terrestris), Alston Moor, Cumbria, England, United Kingdom, Europe

Water vole (Arvicola terrestris), captive, United Kingdom, Europe

Water vole (Arvicola terrestris) in captivity, United Kingdom, Europe

Water vole (Arvicola terrestris), swimming, Gloucester and Sharpness Canal, Shepherd's Patch, Gloucestershire, England, United Kingdom, Europe

Water vole, Arvicola terrestris, feeding on iris leaves, Kent, England

American mink (Mustela vison). Non-native species in the UK considered a threat to ground-nesting birds and water voles in particular. Widespread as a result of escapes from fur farms since the 1950s. Hebrides, Scotland

American mink (Mustela vison). Non-native species in the UK considered a threat to ground-nesting birds and water voles in particular. Widespread as a result of escapes from fur farms since the 1950s. Hebrides, Scotland

American mink (Mustela vison). Non-native species in the UK considered a threat to ground-nesting birds and water voles in particular. Widespread as a result of escapes from fur farms since the 1950s. Hebrides, Scotland

American mink (Mustela vison). Non-native species in the UK considered a threat to ground-nesting birds and water voles in particular. Widespread as a result of escapes from fur farms since the 1950s. Hebrides, Scotland

American mink (Mustela vison). Non-native species in the UK considered a threat to ground-nesting birds and water voles in particular. Widespread as a result of escapes from fur farms since the 1950s. Hebrides, Scotland

American mink (Mustela vison). Non-native species in the UK considered a threat to ground-nesting birds and water voles in particular. Widespread as a result of escapes from fur farms since the 1950s. Hebrides, Scotland

Water vole (Arvicola amphibius) adult feeding on a pond, Kent, England, United Kingdom, Europe

Water vole (Arvicola amphibius) adult feeding by a pond, Kent, England, United Kingdom, Europe

Water vole (Arvicola amphibius) adult on the edge of a canal, Derbyshire, England, United Kingdom, Europe

A Water Vole (Arvicola terrestris) assesses his surroundings in the Peak District National Park, UK.