Sven Zacek / American mink (Mustela vison) on ice with Common frog (Rana temporaria) prey, Tartumaa, Estonia, January. Introduced species.

Sven Zacek / American mink (Mustela vison) shaking off fur on ice with Common frog (Rana temporaria) prey, Tartumaa, Estonia, January. Introduced species.

Sven Zacek / American mink (Mustela vison) running on ice with Common frog (Rana temporaria) prey, Tartumaa, Estonia, January. Introduced species.

Edwin Giesbers / European mink (Mustela lutreola) swimming, captive, Germany, Critically endangered

Edwin Giesbers / European mink (Mustela lutreola) on log, Captive, Germany, Critically endangered

Florian Möllers / European Mink (Mustela lutreola) female on a forest road. Critically endangered. Saarland, Germany, August.

Sylvain Cordier / European mink (Mustela lutreola) England, UK, June.

Sylvain Cordier / European mink (Mustela lutreola) walking by water, England, UK, June.

Sven Zacek / American mink (Mustela vison) on ice with Common frog (Rana temporaria) prey, Tartumaa, Estonia, January. Introduced species.

Sven Zacek / American mink (Mustela vison) on ice with Common frog (Rana temporaria) prey, Tartumaa, Estonia, January. Introduced species.

Sven Zacek / American mink (Mustela vison) on river ice, with Common frog (Rana temporaria), Tartumaa, Estonia, January. Introduced species.

Sven Zacek / American mink (Mustela vison) on ice with Common frog (Rana temporaria) prey, Tartumaa, January . Introduced species.