Franco Banfi / Portrait of Siberian Husky dog face used as sled dogs inside Riisitunturi National Park, Lapland, Finland

Petra Wegner / Siberian Husky, puppy, 11 weeks, lying down.

Chadden Hunter / Husky dog (Canis familiaris) Northern Canada, taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Close up of Husky dog eyes (Canis familiaris), note the different eye colour, Northern Canada. Taken on location for BBC Frozen Planet series, 2009

Uri Golman / Portrait of photographer Uri Golman with Greenland husky sled dog, North East Greenland. March 2009. Model released

Jane Burton / Back view of two sitting Siberian Husky pups, 6 weeks old, looking to one side

Staffan Widstrand / Dogs pulling tourist sledge Spitzbergen, Svalbard, Norway

Mark Raycroft / Siberian Husky (Canis familiaris) puppy running in winter, North America

Mark Raycroft / Alaskan Malamute (Canis familiaris) in snow wearing pack

Mark Raycroft / Alaskan Malamute (Canis familiaris) adult laying in grass

Mark Raycroft / Alaskan Malamute (Canis familiaris) portrait sitting

Mark Raycroft / Alaskan Malamute (Canis familiaris) adult, portrait in snow

Mark Raycroft / Alaskan Malamute (Canis familiaris) puppies laying on sled

Lynn M. Stone / Siberian Husky male standing beside tree trunk in autumn foliage. Mohawk State Forest, Connecticut, USA . October.

Lynn M. Stone / Siberian Husky in snow by dog sled, Massachusetts, USA.

Lynn M. Stone / Siberian Husky dog head portrait, Massachusetts, USA.

Lynn M. Stone / Siberian Husky in snow, peering from behind birch tree, Massachusetts, USA.

Lynn M. Stone / Siberian Husky running in snow, Massachusetts, USA.

Lynn M. Stone / Siberian Husky sitting in snow, Connecticut, USA.

Lynn M. Stone / Siberian Husky dog head portrait, Connecticut, USA.

Lynn M. Stone / Siberian Husky jumping / running in snow, Illinois, USA.

Lynn M. Stone / Siberian Husky jumping / running in snow, Illinois, USA

Lynn M. Stone / Siberian Husky dog lying in snow, Illinois, USA

Lynn M. Stone / Siberian Husky lying in snow, Illinois, USA

Lynn M. Stone / Female Siberian husky head portrait, Connecticut, USA. May.

Mark Taylor / Husky-cross dog portrait.

Mark Taylor / Husky-cross dog sitting.

Mark Taylor / Husky-cross dog, sitting, looking up

Mark Taylor / Husky-cross dog walking.

Mark Taylor / Husky-cross dog.

Mark Taylor / Husky-cross dog.

Lynn M. Stone / Siberian husky, Connecticut, USA.

Staffan Widstrand / Nils-Torbjörn Nutti, owner and operator at Nutti Sami Siida, with domestic husky dog, during snowmobile trip into the wilderness, Jukkasjarvi, Lapland, Laponia, Norrbotten county, Sweden Model releas...

Melvin Grey / Husky puppy, portrait. Churchill, Manitoba, Canada

Melvin Grey / Husky puppy, portrait. Churchill, Manitoba, Canada

Klein & Hubert / Siberian Husky sledge team running in snow, Vosges, France.

Loic Poidevin / Husky portrait, Hossa Finland.

Ernie Janes / Siberian Husky on Holkham beach, Norfolk, May

Franco Banfi / Siberian Husky dog used for sled dogs inside Riisitunturi National Park, Lapland, Finland

Franco Banfi / Dog-sledding with Siberian Husky dogs inside Riisitunturi National Park, Lapland, Finland

Franco Banfi / Dog-sledding with Siberian Husky dogs inside Riisitunturi National Park, Lapland, Finland

Franco Banfi / Dog-sledding with Siberian Husky dogs inside Riisitunturi National Park, Lapland, Finland

Franco Banfi / Siberian Husky dog team pulling sled inside Riisitunturi National Park, Lapland, Finland

Franco Banfi / Siberian Husky dogs used as sled dogs inside Riisitunturi National Park, Lapland, Finland

Franco Banfi / Siberian Husky dog, close up of face, used as sled dog inside Riisitunturi National Park, Lapland, Finland

Franco Banfi / Photography Franco Banfi playing with Siberian Husky dogs used as sled dog inside Riisitunturi National Park, Lapland, Finland

Franco Banfi / Siberian Husky dog used fas sled dog inside Riisitunturi National Park, Lapland, Finland

Franco Banfi / Siberian Husky dogs at rest, used as sled dogs inside Riisitunturi National Park, Lapland, Finland