Danny Green / Hazel Dormouse (Muscardinus avellanarius) hibernating amongst leaves and acorns. Captive. Leicestershire, UK, October.

Sven Zacek / Roe deer (Capreolus capreolus) buck in snowy field, Vesneri, southern Estonia, March. Winner of the Animal stories portfolio in the Melvita Nature Images Awards competition 2014.

Sven Zacek / Roe deer (Capreolus capreolus) herd moving through snow, Estonia, March. Winner of the Animal stories portfolio in the Melvita Nature Images Awards competition 2014.

Sven Zacek / Two Roe deer (Capreolus capreolus) sniffing each other in the snow, Vorumaa, Estonia, January. Winner of the Animal stories portfolio in the Melvita Nature Images Awards competition 2014.

Sven Zacek / Roe deer (Capreolus capreolus) in dense fog. Vorumaa, Estonia, January. Winner of the Animal stories portfolio in the Melvita Nature Images Awards competition 2014.

Sven Zacek / Roe deer (Capreolus capreolus) group in snow, looking at camera. Vorumaa, Estonia, December. Winner of the Animal stories portfolio in the Melvita Nature Images Awards competition 2014.

Sven Zacek / Roe deer (Capreolus capreolus) running through snow, Vorumaa, Estonia, January. Winner of the Animal stories portfolio in the Melvita Nature Images Awards competition 2014.

Sven Zacek / Roe deer (Capreolus capreolus) buck and doe interacting, Vesneri, Estonia, March. Winner of the Animal stories portfolio in the Melvita Nature Images Awards competition 2014.

Pal Hermansen / Snow falling in Bastnas car graveyard Varmland, Sweden, December. Winner of the Portfolio category in the Melvita Nature Images Awards competition 2014.

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. Vauldalen, Sor-Trondelag, Norway, April.

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

Bruno D'Amicis / Apennine chamois (Rupicapra pyrenaica ornata) adult male. Endemic to the Apennine mountains. Abruzzo, Italy, December.

Edwin Giesbers / Wide angle close-up of two European grey wolves (Canis lupus), captive, Norway, February.

Pal Hermansen / Blue tit (Cyanistes caeruleus) taking off in the snow, with old cars in the background, Bastnas, Sweden, February. Winner of the Fritz Polking Prize at the GDT competition 2013 and winner of the Portf...

Theo Bosboom / Dead Angelica (Angelica sp) in the snow, Skaftafell, Vatnajokull National Park, Iceland, February

Theo Bosboom / Conifer trees in snowy landscape, near Baraque Michel, Belgian Ardennes, January 2010

Markus Varesvuo / Pine Grosbeak (Pinicola enucleator) male feeding on berries with traffic light behind, Oulu, Finland, December

Vladimir Medvedev / Wild female Amur leopard (Panthera pardus orientalis) on rocky hillside, Kedrovaya Pad reserve, Primorsky Krai, Far East Russia, January. Critically endangered species. Commended in Wildlife Photograp...

George Sanker / White-tailed deer (Odocoileus virginianus) in snow, Acadia National Park, Maine, USA, February.

George Sanker / Mallard (Anas platyrhynchos) walking on ice, Acadia National Park, Maine, USA, April.

Wild Wonders of Europe / Widstrand / European bison (Bison bonasus), large bull, Drawsko Military area, Western Pomerania, Poland, February.

David Tipling / Roost of around 800 Pied Wagtails (Motacilla alba) in trees outside Terminal 5 Heathrow, London, UK. December.

David Tipling / Roost of around 800 Pied Wagtails (Motacilla alba) in trees outside Terminal 5 Heathrow, London, UK. December 2013.

David Tipling / Roost of around 800 Pied Wagtails (Motacilla alba) in trees outside Terminal 5 Heathrow London UK

David Tipling / Roost of around 800 Pied Wagtails (Motacilla alba) in trees outside Terminal 5 Heathrow, London, UK. December 2013.

Thomas Lazar / Hikers on frozen lake looking at sea caves and ice formations, Apostle Islands National Lakeshore, Lake Superior, Squaw Bay, Wisconsin, February 2014.

Thomas Lazar / Icicles hanging from sandstone cliffs on shoreline, Apostle Islands National Lakeshore, Lake Superior, Squaw Bay, Wisconsin, February 2014.

Thomas Lazar / Jagged icicles hanging from towering sandstone cliff, Apostle Islands National Lakeshore, Lake Superior, Squaw Bay, Wisconsin, February 2014.

Carol Walker / Chestnut Mustang running in snow, at ranch, Shell, Wyoming, USA. February.

Dong Lei / Sichuan Pheasant Partridges (Tetraophasis szechenyii) in snow, Yajiang county, Sichuan Province, Qinghai-Tibet Plateau, China, Asia

Andrew Parkinson / Brown hare (Lepus europaeus) two males chasing female in snow covered field during a blizzard. Derbyshire, England, UK, February. Winner of British Seasons category of BWPA competition 2014.

Anup Shah / Japanese Macaque (Macaca fuscata) male yawning while resting at the edge of thermal hotspring pool. Jigokudani Yean-Koen National Park, Japan, February.

Anup Shah / Japanese Macaque (Macaca fuscata) babies huddled in their mother's fur for warmth. Jigokudani Yean-Koen National Park, Japan, February.

Fiona Rogers / Japanese Macaque (Macaca fuscata) female portrait. Jigokudani Yean-Koen National Park, Japan, February.

Fiona Rogers / Japanese Macaque (Macaca fuscata) baby submerged in a thermal hotspring pool. Jigokudani Yean-Koen National Park, Japan, February.

Fiona Rogers / Japanese Macaque (Macaca fuscata) sub-adult portrait. Jigokudani Yean-Koen National Park, Japan, February.

Kristel Richard / Piber Federal Stud employees leading Lipizzaner colts from the Stubalpe mountains to their winter stable, near Koflach, Styria, Austria, September 2013. Editorial use only.

Yukihiro Fukuda / Japanese squirrel (Sciurus lis) running after an female in oestrus in the snow, Mount Yatsugatake, Nagano Prefecture, Japan. Endemic species.

Erlend Haarberg / Mountain hares (Lepus timidus) running. Vauldalen, Sor-Trondelag, Norway, May.

Olga Kamenskaya / Icicles / ice stalactites hanging from cave ceiling, Lake Baikal, Siberia, Russia, March.

Olga Kamenskaya / Ice splash out formation with icicles, Lake Baikal, Siberia, Russia, March.

Olga Kamenskaya / Ice splash out formation with icicles, Lake Baikal, Siberia, Russia, March

Olga Kamenskaya / Ice formation at sunset, Lake Baikal, Siberia, Russia, March.

Olga Kamenskaya / Ice pile of broken shelf ice, near the shore of Lake Baikal, Siberia, Russia, March.

Peter Cairns / Calcified trees at Tangled Creek in winter, Yellowstone National Park, Wyoming, USA, February 2013.

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

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat with fish. Vauldalen, Sr-Trndelag, Norway, April.

Edwin Giesbers / Two European grey wolves (Canis lupus) in woodland, captive, Norway, February.

Edwin Giesbers / Three European grey wolves (Canis lupus), captive, Norway, February.

Edwin Giesbers / European lynx (Lynx lynx) climbing a tree, captive, Norway, February.

Diane McAllister / Japanese Macaque (Macaca fuscata) mother holding her baby in snowstorm, Jigokudani, Japan.

Diane McAllister / Japanese Macaque (Macaca fuscata) perched on the open warm section of a rocky hillside, takes in the last rays of the late afternoon sun in Jigokudani, Japan.

Diane McAllister / Japanese Macaque (Macaca fuscata) juvenile swimming in hot spring, Jigokudani, Japan.

Diane McAllister / Japanese Macaque (Macaca fuscata) mothers grooming their babies in the hot springs of Jigokudani, Japan, February

Diane McAllister / Japanese Macaque (Macaca fuscata) female standing on hind legs in snow, Jigokudani, Japan. February

Markus Varesvuo / Male Rock ptarmigan (Lagopus mutus) vocalising whilst in flight, showing winter plumage, Utsjoki, Finland, April.

Sven Zacek / Roe deer (Capreolus capreolus) feeding on a snowy field, Southern Estonia, March.

Sven Zacek / Red fox (Vulpes vulpes) stanidng in snowy clearing in bog, Southern Estonia, February.

Theo Bosboom / Algae captured in ice, taken at a fen in the Deeler Woud Nature Reserve, Veluwe, the Netherlands, January

Theo Bosboom / Drift ice, dike of Stavoren, IJsselmeer, the Netherlands, January 2011

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

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

Michel Poinsignon / Blackbird (Turdus merula) perched on branch in winter feeding on apple, snowing, Lorraine, France, December

Colin Varndell / Adult robin (Erithacus rubecula) perched on twig in late winter. Dorset, UK February

Diane McAllister / Japanese Macaque (Macaca fuscata) positioned on the edge of the hot springs with head on rock, paw under chin, staring, Jigokudani, Japan, January

Diane McAllister / Japanese Macaque (Macaca fuscata) male holding onto his female mate defensively, Jigokudani, Japan, February

Diane McAllister / Japanese Macaque (Macaca fuscata) adult sitting in snow with paws stacked, Jigokudani, Japan, January

Diane McAllister / Young Japanese macaque (Macaca fuscata) 'kissing' another macque in the thermal hot springs, Jigokudani, Japan, January

Bert Willaert / Valdivia Ground Frog (Eupsophus vertebralis) Oncol Park, Chile, January

Bert Willaert / Male green Darwin's Frog (Rhinoderma darwinii) with young in vocal pouch, Chile, December 2012, Vulnerable species

Bert Willaert / Vanzolini's Spiny-chest Frog (Alsodes vanzolinii) on Eucalyptus leaves, endemic to the Nahuelbuta mountain range, Chile, December. Critically Endangered species

Vladimir Medvedev / Amur / Siberian Tiger (Panthera tigris altaica) female in the wild, walking down a hillside, Lazovskiy zapovednik / Lazo Reserve protected area, Primorskiy krai, Far Eastern Russia, February 2012

Vladimir Medvedev / Amur / Siberian Tiger (Panthera tigris altaica) female in the wild, near the coast, Lazovskiy zapovednik / Lazo Reserve protected area, Primorskiy krai, Far Eastern Russia, February 2012

David Pattyn / Red fox (Vulpes vulpes)running in the snow during snowfall, Gran Paradiso National Park, Italy. December

Igor Shpilenok / Mountain Hare (Lepus timidus) feeding. Kronotsky Zapovednik Nature Reserve, Kamchatka Peninsula, Russian Far East, March.

Edwin Giesbers / European river otter (Lutra lutra) head portrait against snow, Netherlands, captive

Andy Trowbridge / Female goshawk (Accipiter gentilis) in flight, just after taking off from perch. Southern Norway, January.

Andy Trowbridge / Young roe deer buck (Capreolus capreolus) standing in snow, with tongue poking out. Southern Norway, February.

Fabrice Cahez / European Robin (Erithacus rubecula) on snow covered birch tree branch, Vosges, France, January

Markus Varesvuo / Golden Eagle (Aquila chrysaetos) in flight rear view, Kuusamo, Finland, February

Markus Varesvuo / Golden Eagle (Aquila chrysaetos) in flight, snowing, Utajarvi, Finland, February

Markus Varesvuo / Common Crossbill (Loxia curvirostra) with cone on top of snow covered tree, Kuusamo, Finland, February

David Tipling / Snow Geese (Chen caerulescens) taking off at dawn Bosque del Apache, New Mexico, USA, winter

Ross Hoddinott / 2020VISION / Monochrome image of a Hawthorn tree (Crataegus monogyna) and granite outcrop near Saddle Tor, Dartmoor National Park, Devon, England, UK, January 2011.

Florian Möllers / 'Jogi', a Jack Russell Terrier cross breed, male playing in the snow. Germany

XI ZHINONG / Wild White-Lipped Deer (Przewalskium albirostris) male, Kekexili, Qinghai, Tibetan Plateau, China. Vulnerable species.

Colin Varndell / Robin (Erithacus rubecula) in snow. Dorset, UK, January 2010.

Colin Varndell / Redwing (Turdus iliacus) in winter on windfall apples. Dorset, UK, December 2010.

Niall Benvie / Leafless tree canopy silhouetted in winter. Gannochy, Scotland, February.

Alex Hyde / Sycamore (Acer pseudoplatanus) seed coated in hoar frost. Peak District National Park, UK. December.

Ernie Janes / Hedge Parsley seed head (Torilis japonica) silhouetted at sunset, Norfolk, UK, November

Ross Hoddinott / Rays of sunlight penetrating woodland, Rhinefield, The New Forest, Hampshire, UK. November 2012.

Ben Hall / 2020VISION / Canada goose (Branta canadensis) silhouetted on lake at dawn, Stockport, Cheshire, England, UK, December. Did you know? Canada geese mate for life.

XI ZHINONG / Tibetan gazelle (Procapra picticaudata) on mountainside, Kekexili, Qinghai, Tibetan plateau, China, January