Hermann Brehm / Reindeer (Rangifer tarandus) in woodland, Sweden, September.

Uri Golman / Forest reindeer, (Rangifer tarandus fennicus) in velvet, Viiksimo, Kuhmo region. Finland, July. Rare subspecies which were nearly extinct in the 19th Century.

Juan Carlos Munoz / Herd of wild Reindeer (Rangifer tarandus) running past young spruce trees in Taiga woodland, Lappland, Finland, March 2007

Dan Burton / Reindeer (Rangifer tarandus) in enclosure, Lapland, Sweden, November 2009

Bryan and Cherry Alexander / Sun rises behind Reindeer / Caribou skin tents at a Nenets herders' winter camp. Yamal, Siberia, Russia, 1993.- 40 BELOW BOOK

Lassi Rautiainen / Reindeer in forest with snow, Finland (Rangifer tarandus)

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) bull grazing, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) bull displaying, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) bull in autumn, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) bull in town in autumn, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) bull displaying, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) bull displaying to female, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) sub-adult, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) bull, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) females in autumn, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) females in autumn, Newfoundland, Canada

Michael Quinton / Caribou (Rangifer tarandus) mother and calf crossing snow field, Alaska

Nick Hawkins / Woodland caribou (Rangifer tarandus caribou) with tracking collar round neck, Fogo Island, Newfoundland, Canada, October, Endangered species.

Nick Hawkins / Woodland caribou (Rangifer tarandus-caribou) with radio collat round neck, Fogo Island, Newfoundland, Canada, October, Endangered species.

Staffan Widstrand / RF - Reindeer (Rangifer tarandus) in the Saarivuoma Sami community, at at Jarama, Lapland, Laponia, Sweden. January 2016. (This image may be licensed either as rights managed or royalty free.)

Loic Poidevin / Reindeer (Rangifer tarandus) on road, Finland, April 2016

Wild Wonders of Europe / Widstrand / Reindeer / Caribou (Rangifer tarandus) amongst trees, Greater Laponia Rewilding Area, Lapland, Norrbotten, Sweden, June.

Jussi Murtosaari / Finnish forest reindeer (Rangifer tarandus fennicus) male in velvet, northern Finland, June.

Jussi Murtosaari / Finnish forest reindeer (Rangifer tarandus fennicus) male in velvet, northern Finland, June.

Jussi Murtosaari / Finnish forest reindeer (Rangifer tarandus fennicus) male moulting in summer, northern Finland, February.

Igor Shpilenok / Reindeer (Rangifer tarandus) female in Erman birch forest. Kronotsky Zapovednik Nature Reserve, Kamchatka Peninsula, Russian Far East, July.

Bryan and Cherry Alexander / Nenets girl driving train of Reindeer / Caribou (Rangifer tarandus) sleds through forest, Yamal, Northwest Siberia, 1996. 40 BELOW bookplate.

Lassi Rautiainen / Young Reindeer (Rangifer tarandus) running through woodland, Finland, June

Juan Carlos Munoz / Herd of wild Reindeer (Rangifer tarandus) running past young spruce trees in Taiga woodland, Lappland, Finland, March 2007

Juan Carlos Munoz / Herd of wild Reindeer (Rangifer tarandus) grazing in snow among young spruce trees in Taiga woodland, Lappland, Finland, March 2007

Juan Carlos Munoz / Herd of wild Reindeer (Rangifer tarandus) grazing in snow among young spruce trees in Taiga woodland, Lappland, Finland, March 2007

Juan Carlos Munoz / Herd of wild Reindeer (Rangifer tarandus) grazing in thick snow among young spruce trees in Taiga woodland, Lappland, Finland, March 2007

Bryan and Cherry Alexander / Nenets girl driving train of Reindeer / Caribou (Rangifer tarandus) sleds through a forest on spring migration. Yamal, Siberia, Russia, 1996.

Bryan and Cherry Alexander / Nenets herders' winter camp with Reindeer / Caribou (Rangifer tarandus) herd in the forest. Yamal, Siberia, Russia, 1996.

Bryan and Cherry Alexander / Nenets men removing velvet from Reindeer / Caribou antlers to be used as an aphrodisiac. Yamal, Siberia, Russia, 1996.

Bryan and Cherry Alexander / Nenets woman feeding boiled fish to young weak Reindeer / Caribou calf (Rangifer tarandus) at winter camp. Yamal, Siberia, Russia, 1996.

Bryan and Cherry Alexander / Nenets Reindeer / Caribou herder bending larch planks into sled runners over fire. Yamal, Siberia, Russia, 1996.

Bryan and Cherry Alexander / Nenets baby in a cradle on wooden sled at Reindeer / Caribou herders' winter camp. Yamal, Western Siberia, Russia, 1996.

Bryan and Cherry Alexander / Nenets boy playing on a swing at Reindeer / Caribou herders' winter camp. Yamal, Siberia, Russia, 1996.

Bryan and Cherry Alexander / Nenets woman leading train of Reindeer / Caribou (Rangifer tarandus) sleds down icy banks of the River Ob. Yamal, Siberia, Russia, 1993

Bryan and Cherry Alexander / Draught Reindeer / Caribou (Rangifer tarandus) at Nenets herders' winter camp. Yamal, Siberia, Russia, 1993.

Bryan and Cherry Alexander / Evenk herder at winter camp in the forest, holding a pair of traditional Evenk Reindeer / Caribou skin covered skis. Surinda, Evenkiya, Central Siberia, Russia, 1997.

Bryan and Cherry Alexander / Evenk herders driving Reindeer / Caribou (Rangifer tarandus) through deep snow at their winter pastures. Evenkiya, Siberia, Russia, 1997.

Bryan and Cherry Alexander / Lake Sami man travelling by 'Pulka,' traditional sled pulled by Reindeer (Rangifer tarandus). Inari, North Finland, 1996.

Bryan and Cherry Alexander / Santa Claus / Father Christmas on sleigh pulled by Reindeer (Rangifer tarandus), Rovaniemi, Finland, 1996.

Bryan and Cherry Alexander / Santa Claus / Father Christmas feeding Reindeer (Rangifer tarandus), Rovaniemi, Finland, 1996.

Bryan and Cherry Alexander / Santa Claus / Father Chrismas with Reindeer (Rangifer tarandus), Rovaniemi, Finland, 1996.

Bryan and Cherry Alexander / Sleigh ride at Reindeer (Rangifer tarandus) ranch. Rovaniemi, Finland, 1996.