Ernie Janes / Domestic pig, free range sow and piglet sniffing noses, UK, August 2010

Jane Burton / Portrait of young blonde haired girl, lying down with with two Golden Retriever puppies. Model released

Staffan Widstrand / Two Cheetahs (Acinonyx jubatus) touching noses in greeting display, Serengeti NP, Tanzania, East Africa, January

Staffan Widstrand / Inuit narwhal hunter, Qaanaaq, Greenland.

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

Lynn M. Stone / American Eskimo dogs, two sittingin snow with waterfall in background. Kent, Connecticut, USA.

Lynn M. Stone / American Eskimo dog standing in snow. Connecticut, USA.

Lynn M. Stone / American Eskimo dog in snow. Connecticut, USA.

Ashley Cooper / Inuit summer hunting camp at the mouth of the Sepentine River near Shishmaref, Alaska, USA September 2004

Ashley Cooper / Inuit summer hunting camp at the mouth of the Sepentine River near Shishmaref, Alaska, USA September 2004

Ashley Cooper / Inuit child on the tundra at the mouth of the Sepentine river near Shishmaref, Alaska, USA. September 2004

Ashley Cooper / Inuit people in hoodies with the name of the island 'Shishmaref'. Alaska, USA. September 2004