Staffan Widstrand / Arctic fox (Vulpes lagopus) in winter coat, resting in grass, Spitsbergen, Svalbard, Norway, September.

Mark Hamblin / 2020VISION / Two Mountain hares (Lepus timidus) in winter coats, running over snow, Cairngorms NP, Scotland, UK, February

Eric Baccega / Nenet reindeer herder in traditional malitsa (reindeer skin coat) with smartphone. Yar-Sale district, Yamal, Northwest Siberia, Russia. April 2016.

Mark Taylor / Red toy poodle, sitting with red coat on.

Mark Taylor / Red toy poodle, standing with red coat on.

Mark Hamblin / Mountain hare (Lepus timidus) in winter coat resting on moorland, Cairngorms National Park, Scotland, UK, February.

Sergey Gorshkov / Arctic foxes (Vulpes lagopus) in summer coats, Wrangel Island, Far Eastern Russia, August.

Petra Wegner / Siberian Forest Cat with kitten, 7 weeks, white coats

Alex Hyde / Pair of mountain hares (Lepus timidus) with white winter coats camouflaged amongst patchy snow, Kinder Scout, Peak District National Park, Derbyshire, UK, February.

Mark Hamblin / 2020VISION / Two Mountain hares (Lepus timidus) in winter coats sat in snow, Scotland, UK, January

Aflo / Group portrait of Chihuahua puppies sitting, wearing pink coats

Steven Kazlowski / Pair of Arctic foxes (Vulpes lagopus) playing together, with their coats changing from summer brown to winter white, Autumn, Arctic National Wildlife Refuge, Alaska.