Carol Walker / Head portrait of grey Arabian stallion running in desert dunes near Dubai, United Arab Emirates.

Cheryl-Samantha Owen / Common or plains zebra (Equus quagga burchelli) grazing in bushTarangire National Park, Northern Tanzania.

Danny Green / Red deer (Cervus elaphus) stag in the snow, Scotland, March

Danny Green / European brown bear (Ursus arctos) male standing in snow, Finland, April

Gabriel Rojo / Cattle tyrant (Machetornis rixosus) perched on capibara (Hydrochoerus hydrochaeris) Ibera Marshes, Corrientes Province, Argentina

George Sanker / North American River Otter (Lontra canadensis) two swimming near the surface with autumn leaves reflected in water, Acadia National Park, Maine, USA, October.

Juan Carlos Munoz / Bontebok (Damaliscus pygargus) in fynbos vegetation, West Coast National Park, Western Cape province, South Africa, September 2012.

Sam Hobson / Urban Red fox (Vulpes vulpes), adult male (dog). Bristol, UK. August.

Ann & Steve Toon / Namaqua chameleon (Chamaeleo namaquensis), Namib Desert, Namibia, April

Sven Zacek,Sven Zacek / Roe deer buck (Capreolus capreolus) in field sniffing air, Southern Estonia, May

Juan Carlos Munoz / Walia ibex (Capra walie) herd, Simien Mountains National Park, Ethiopia

Benjamin Barthelemy,Benjamin Barthelemy / Chamois (Rupicapra rupicapra), Ballons des Vosges Regional Natural Park, Vosges, Lorraine, France, December