Sven Zacek / Roe deer (capreolus capreolus) buck with velvet antlers and fawn, Tartumaa, Estonia, March.

Ole Jorgen Liodden / Polar bear (Ursus maritimus) waving standing on hind legs with paws raised, Svalbard, Norway, September.

Alex Mustard / Sharpnose puffer (Canthigaster rostrata) portrait with the eyes standing out against a dark background, East End, Grand Cayman, Cayman Island, British West Indies, Caribbean Sea.

Terry Whittaker / 2020VISION / Pine marten (Martes martes) adult female portrait, standing, in caledonian forest, The Black Isle, Highlands, Scotland, UK, July. Photographer quote: "Sitting alone in my hide for hours on end, you be...

Edwin Giesbers / Orangutan baby (Pongo pygmaeus) head portrait of baby, Semengoh Nature reserve, Sarawak, Borneo, Malaysia. Endangered.

Mark Taylor / Maine Coon female cat, Serafin, in fierce defensive posture

Mark Taylor / Ginger kitten with tail in the air

Gabriel Rojo / Guanaco herd (Lama guanicoe) in front of mountain landscape. Torres del Paine National Park, Chile

Ann & Steve Toon / Elephant Population Management Program surgeon Dr Johan Marais, left, of the University of Pretoria's Faculty of Veterinary Science assisted by Dr Dean Hendrickson, director of Colorado State Universi...

Suzi Eszterhas / Chimpanzee (Pan troglodytes) large male with hair pile standing erect after dominance display, tropical forest, Western Uganda

Rod Williams / Southern mitered langur (Presbytis melalophos mitrata) South East Sumatra, endangered species. Captive.

Loic Poidevin / Canopy / Wills Chameleon (Furcifer willsii) standing on end of a branch, Madagascar.