Konrad Wothe / Stoat (Mustela erminea) in white winter coat standing upright in snow, Upper Bavaria, Germany, Europe. February.

Loic Poidevin / Stoat (Mustela erminea) Creux du Van, Jura Suisse , Switzerland, September.

Erlend Haarberg / Stoat (Mustela erminea) in snow tunnel, Laponia UNESCO World Heritage Site, Swedish Lapland, Sweden. January. Third place in Golden Turtle Photography Awards 2017 competition.

Espen Bergersen / Stoat (Mustela erminea) in winter coat, Andoy, Norway

Erlend Haarberg / Stoat (Mustela erminea) digging in snow, in white winter coat. Vauldalen, Sor-Trondelag, Norway, May.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat running. Vauldalen, Sor-Trondelag, Norway, May.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, running. Vauldalen, Sor-Trondelag, Norway, May.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, running. Vauldalen, Sor-Trondelag, Norway, May.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, running. Vauldalen, Sor-Trondelag, Norway, May.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, running. Vauldalen, Sor-Trondelag, Norway, April.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat. Vauldalen, Sor-Trondelag, Norway, April.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat. Vauldalen, Sor-Trondelag, Norway, April.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, standing on hind legs, Vauldalen, Sor-Trondelag, Norway, April.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, standing on hind legs, Vauldalen, Sor-Trondelag, Norway, April.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, carrying fish, Vauldalen, Sor-Trondelag, Norway, April.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat. Vauldalen, Sor-Trondelag, Norway, May.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, trying to steal fish (trout) hanging on transparent fishing line. Vauldalen, Sor-Trondelag, Norway, April

Orsolya Haarberg,Orsolya Haarberg / Stoat (Mustela erminea) in white winter coat in snow, Vauldalen, Sor-Trondelag, Norway.April

Orsolya Haarberg,Orsolya Haarberg / Stoat (Mustela erminea) feeding on fish hanging from wire. In white winter coat. Vauldalen, Sor-Trondelag, Norway. April

Richard Steel / 2020VISION / Stoat (Mustela erminea) standing on rock in saltmarsh, Conwy, Wales, UK, June.

Andy Rouse / 2020VISION / Stoat (Mustela erminea), UK, July. 2020VISION Book Plate. Did you know? There are 37 subspecies of stoat around the world.

Fabrice Cahez / Stoat (Mustela erminea) in winter coat, running, Champagne, France, Februray.

Andy Rouse / European Stoat (Mustela erminea) in vegetation. UK, July.

Andy Rouse / European Stoat (Mustela erminea) portrait. UK, July.

Terry Whittaker / 2020VISION / Pine marten (Martes martes) two 4-5 month kits running along branch of tree in caledonian forest, The Black Isle, Highlands, Scotland, UK, July. Photographer quote: 'Watching a family of young pine ma...

Andy Sands / Stoat (Mustela erminea) in partial white winter ermine coat, captive, UK. British stoats rarely assume full winter ermine coast. This animal originated from Teesdale, County Durham.

Andy Rouse / European stoat (Mustela erminea) in habitat, UK (non-ex)

Andy Rouse / European stoat (Mustela erminea) in habitat, UK (non-ex)

Andy Rouse / European stoat (Mustela erminea) in habitat, UK (non-ex)

Oriol Alamany / Stoat / Ermine (Mustela erminea) juvenile, Aran valley, Pyrenees, Spain

Oriol Alamany / Stoat / Ermine (Mustela erminea) two juveniles playing, Aran valley, Pyrenees, Spain

Oriol Alamany / Stoat / Ermine (Mustela erminea) mother with three young, Aran valley, Pyrenees, Spain

Igor Shpilenok / Stoat {Mustela erminea} in white winter coat, Kronotsky Zapovednik, Kamchatka, Far East Russia, April

Igor Shpilenok / Stoat {Mustela erminea} with vole prey, Kronotsky Zapovednik Reserve, Kamchatka, Russia.

Igor Shpilenok / Stoat {Mustela erminea} portrait peering out of den, Kronotsky Zapovednik Reserve, Kamchatka, Russia.

Igor Shpilenok / Stoat {Mustela erminea} running, Valley of the Geysers, Kronotsky Zapovednik Reserve, Kamchatka, Russia.

Elio Della Ferrera / Stoat {Mustela erminea} with white winter coat in snow. Stelvio National Park, Italy.

Asgeir Helgestad / Stoat in white winter coat {Mustela erminea} Norway

Mike Wilkes / Stoat {Mustela erminea} Warwickshire, UK

Elio Della Ferrera / Stoat / Ermine surveying surroundings , Alps, Europe

Elio Della Ferrera / Stoat / Ermine running across snow in winter, Alps, Eruope

TOM MANGELSEN / Stoat / Ermine in winter coat (Mustela erminea) Grand Teton NP Wyoming, USA

Seppo Valjakka / Stoat in midnight sun (Mustela erminea) northern Finland

TOM MANGELSEN / Stoat / Ermine in winter coat by wood pile (Mustela erminea) Grand Teton NP, USA

Brian Lightfoot / Stoat (Mustela erminea) stalking rabbit, Scotland

Brian Lightfoot / Stoat with rabbit prey, Scotland.

Thomas Mangelsen / Short-tailed Weasel (Mustela erminea) camouflaged against snowbank, Grand Teton National Park, Wyoming

Robin Chittenden / Stoat (Mustela erminea) on path, portrait, Strumpshaw Fen, Norfolk, UK. September.