Klaus Echle / Red Fox (Vulpes vulpes) walking along a fallen trunk, silhouetted in misty forest. Black Forest, Germany, November.

David Shale / Female Anglerfish fanfin seadevil (Caulophryne jordani) - Deep sea species from Atlantic Ocean, found at 700-3000m.

Shane Gross / Caribbean reef squid (Sepioteuthis sepioidea) portrait at night, Eleuthera, Bahamas.

Shane Gross / American crocodile (Crocodylus acutus) with open mouth amongst Seagrass (Alismatales). Gardens of the Queen National Park, Cuba.

Klein & Hubert / Black / Melanistic Leopard (Panthera pardus) growling. Controlled conditions

Emanuele Biggi / Peruvian Tarantula (Pamphobeteus sp.) and Humming Frog (Chiasmocleis royi) together, Los Amigos Biological Station, Madre de Dios, Amazonia, Peru. These species have a commensal relationship. The tara...

Klein & Hubert / Hippopotamus (Hippopotamus amphibius) charging in Luangwa river, close up of mouth and teeth, Zambia

Ann & Steve Toon / Lion (Panthera leo) male snarling at night, Zimanga private game reserve, KwaZulu-Natal, South Africa, September

Emanuele Biggi / Peruvian Tarantula (Pamphobeteus sp.) adult, walking over Humming Frog (Chiasmocleis royi) without preying on it. Los Amigos Biological Station, Madre de Dios, Amazonia, Peru. These species have a com...

David Fleetham / Great white shark (Carcharodon carcharias) breaking surface with mouth open. Guadalupe Island, Mexico.

Claudio Contreras / American crocodile (Crocodylus acutus), underwater, Jardines de la Reina / Gardens of the Queen National Park, Caribbean Sea, Ciego de Avila, Cuba, January. Vulnerable species.

Nick Hawkins / Common vampire bat (Desmodus rotundus) exiting cave, Costa Rica, March 2014.

Nick Hawkins / Common vampire bats (Desmodus rotundus) roosting in cave, Costa Rica.

Cyril Ruoso / Golden monkey (Rhinopithecus roxellana) male showing canine teeth, Qinling Mountains, China.

Chris & Monique Fallows / Great white shark (Carcharodon carcharias) split level view, New Zealand, March.

Alex Hyde / Fishing spider (Trechalea) waiting to catch a Killifish (Cyprinodontiformes) in a rainforest stream at night, Central Caribbean foothills, Costa Rica.

Ingo Arndt / Prairie rattlesnake (Crotalus viridis viridis), threat display, South Dakota, USA September. Sequence 1 of 3

Ingo Arndt / American Alligator (Alligator mississippiensis) split level, Everglades, USA, January.

Steven Kazlowski / Polar bear (Ursus maritimus) portrait against sky at sunset, Bernard Spit, off the 1002 Area, Arctic National Wildlife Refuge, North Slope, Alaska, USA, September. Vulnerable species.

Will Burrard-Lucas / Spotted hyena (Crocuta crocuta) at night, taken with remote camera. Liuwa Plain National Park, Zambia. December

Jan Hamrsky / Diving beetle (Colymbetes fuscus) close up head portrait. Europe, June. Controlled conditions.

Alex Hyde / Greater horseshoe bat (Rhinolophus ferrumequinum) roosting in cave. Croatia. November.

Nick Garbutt / Darwin's hawkmoth (Xanthopan morgani praedicta) showing extraordinarily long coiled tongue. Andasibe-Mantadia National Park, Madagascar.

Alex Hyde / House spider female (Tegenaria sp.) in garden shed. Derbyshire, UK, March. Highly Commended in the Urban Wildlife category of the 2015 British Wildlife Photography Awards (BWPA) Competition.

Jiri Lochman / Bolas spider (Dicrostichus furcatus / Ordgarius furcatus) female with bolas, a blob of silk at end of line used to swing at prey, only used by females. Bolas spiders also produce pheromones of specifi...

Solvin Zankl / Ribbon sawtail fish (Idiacanthus fasciola) from Atlantic Ocean, at a depth of 800-1000m.

Solvin Zankl / Frilled shark (Chlamydoselachus anguineus) specimen with mouth open, from Atlantic Ocean, at a depth of 729m.

Nick Upton / Adult Herring gull (Larus argentatus) scavenging left over food, St.Ives, Cornwall, UK, June. Editorial use only.

Andy Rouse / Mountain gorilla (Gorilla beringei) silverback yawning with mouth wide open. Rwanda.

Franco Banfi / Green anaconda (Eunectes murinus) underwater, flicking tongue, Formoso River, Bonito, Mato Grosso do Sul, Brazil

Claudio Contreras,Claudio Contreras / Black-axil Chromis (Chromis atripectoralis) blurred motion photograph. Bilang Bilangang Island, Danajon Bank, Central Visayas, Philippines, April

Alex Mustard,Alex Mustard / Wolf fish (Anarhichas lupus) face portrait. Gardur, south west Iceland. North Atlantic Ocean.

Shattil & Rozinski,Shattil & Rozinski / Black bear (Ursus americanus) cub climbing a fence, Minnesota, USA, May.

Solvin Zankl / Dragonfish (Melanostomias melanops) - deep sea specimen from 2000m depth, nr Cape Verde Islands, North Atlantic

Solvin Zankl / Dragonfish (Melanostomias melanops) - deep sea specimen from 2000m depth, nr Cape Verde Islands, North Atlantic

Solvin Zankl / Dragonfish (Melanostomias biseriatus), deepsea specimen from 2000m depth, nr Cape Verde Islands, North Atlantic

Solvin Zankl / Deepsea Blackdevil fish (Melanocetus murrayi) female anglerfish specimen.

Solvin Zankl / Viperfish (Chauliodus sloani) - deep sea specimen from Portugal

Ernie Janes / Barn owl (Tyto alba) in flight, viewed through car windscreen at night, Norfolk, UK, model released. Digital composite

Alex Mustard / Great white shark (Carcharodon carcharias) portrait, Guadalupe Island, Mexico, Pacific Ocean.

Visuals Unlimited / Bengal tiger (Panthera tigris) face showing teeth and tongue, Asia. Not available for ringtone/wallpaper use.

Bernard Castelein / Garden spider (Araneus diadematus) hanging on web with shadow behind, Belgium

Solvin Zankl / Murrays abyssal anglerfish (Melanocetus murrayi) Atlantic ocean. A deep-sea fish with bioluminescent lure used to attract prey. The bioluminescence is produced by symbiotic bacteria; these bacteria ar...

David Shale / Portrait of Fangtooth {Anoplogaster cornuta} Atlantic