Sven Zacek / Ural owl (Strix uralensis) perching on an Apsen tree during the blue hour of dawn, Tartumaa, Estonia, April.

Bernard Castelein / Roe Deer (Capreolus capreolus) stag peering through vegetation, Peerdsbos, Brasschaat, Belgium, July.

Bruno D'Amicis / Fennec fox (Vulpes zerda) pups playing outside of den, Grand Erg Oriental, Kebili Governorate. Tunisia.

Bruno D'Amicis / Fennec fox (Vulpes zerda) ears above sand dunes, Grand Erg Oriental, Kebili Governorate. Tunisia.

Bruno D'Amicis / Fennec fox (Vulpes zerda) displayed in the market (souk), of a Tunisian town. This species is adapted to silence and solitude of the desert, this individual that had been caught as an adult showed cle...

Bruno D'Amicis / Fennec fox (Vulpes zerda) displayed in the market (souk), of a Tunisian town. This species is adapted to silence and solitude of the desert, this individual that had been caught as an adult showed cle...

Dong Lei / Crocodile newt (Tylototriton verrucosus) in leaf litter, Gaoligong Mountain National Nature Reserve, Tengchong county, Yunnan Province, China. May.

Espen Bergersen / Red fox (Vulpes vulpes) searching for lemmings buried in deep snow. Lapland, Finland, March.

Ole Jorgen Liodden / Arctic fox (Alopex lagopus lagopus) grooming in summer fur, Spitsberg, Svalbard, Norway, August.

Markus Varesvuo / Whooper Swan (Cygnus cygnus) standing in snowfall,Hokkaido, Japan, February

Edwin Giesbers / Artic fox (Vulpes lagopus) portrait, captive, Norway, February.

Edwin Giesbers / Artic fox (Vulpes lagopus), captive, Norway, February.