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

Wild Wonders of Europe / Liodden / Sled dog (Canis familiaris) sleeping in snow, Spitsbergen, Svalbard, March 2009

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

Thomas Mangelsen / Polar Bear (Ursus maritimus) investigating chained sled dog, Churchill, Manitoba, Canada

Jim Brandenburg / Inuits dog sledding in midnight sun, Ellesmere Island, Nunavut, Canada

David Allemand / Photographer David Allemand walking with a pulka sled over ice, Lake Baikal, Siberia, Russia. Winner of the Mountain Activity Category of the Montphoto Nature Photography Competition 2019.

Sergio Hanquet / Diver learning to freedive with sled in Atlantic Ocean. Tenerife, Canary Islands. 2015.

Sergio Hanquet / Diver learning to freedive with sled in Atlantic Ocean. Tenerife, Canary Islands. 2015.