Mark Brownlow / Sperm whale {Physeter macrocephalus} diving, tail fluke, Kaikoura, South Island, New Zealand

Neil Anderson / Red squirrel (Sciurus vulgaris), two curled up asleep in drey inside nest box. Nest of lichen and Pine needles. Highlands, Scotland, UK. Medium repro only.

Bernard Castelein / Silky sifaka (Propithecus candidus) in tree, Marojejy National Park, Madagascar. Critically endagered species.

Claudio Contreras / Central American spider monkey (Ateles geoffroyi) juveniles hanging by tails and playing, Calakmul Biosphere Reserve, Yucatan Peninsula, Mexico, August

Ingo Arndt / Madagascar moon moth (Argema mitrei), Captive

Espen Bergersen / Sperm whale (Physeter macrocephalus) tail fluke visible as whale dives. outside Andoya, Norway March

Claudio Contreras / American crocodile (Crocodylus acutus) rear view of animal swimming away over seagrass bed, Banco Chinchorro Biosphere Reserve, Caribbean region, Mexico

Claudio Contreras / American crocodile (Crocodylus acutus) rear view of animal resting in shallow water, close up of tail, Banco Chinchorro Biosphere Reserve, Caribbean region, Mexico

Tony Wu / Humpback whale (Megaptera novaeangliae) executing a dramatic tail slap, throwing up a cascade of water with its powerful fluke, Vava'u, Tonga, South Pacific

Tony Wu / Humpback whales (Megaptera novaeangliae) unusual scene with two adults tail-slapping together in rough seas, Vava'u, Tonga, South Pacific

Bence Mate / Western diamond-backed rattlesnake (Crotalus atrox) Texas, USA, April.

Igor Shpilenok / Red fox (Vulpes vulpes) cub biting tail of adult male, Kronotsky Zapovednik Nature Reserve, Kamchatka Peninsula, Russian Far East. June.

Cyril Ruoso / Rabbit (Oryctolagus cuniculus) juvenile running away, Burgundy, France.

Tony Wu / Humpback whale (Megaptera novaeangliae), fluke of female with male calf playing below, Vava'u, Tonga, Pacific Ocean.

Lou Coetzer / Pintailed whydah (Vidua macroura) male displaying to female, Masai Mara, Kenya.

Pascal Kobeh / Long-snouted seahorse (Hippocampus guttulatus) with prehensile tail twined round seagrass, Etang de Thau Lagoons, Languedoc-Roussillon, France.

Michel Poinsignon / Black headed gull (Chroicocephalus ridibundus) taking off, detail of legs and water droplets, Pusztaszer, Hungary, April

Anup Shah / Southern plains grey langur / Hanuman langurs (Semnopithecus dussumieri) rear view sitting, gathered on sandstone cliffs . Jodhpur, Rajasthan, India. March.

Anup Shah / Southern plains grey langur / Hanuman langur (Semnopithecus dussumieri) juveniles playing at sunrise, Jodhpur, Rajasthan, India. March.

Mark Hamblin / 2020VISION / Red squirrel (Sciurus vulgaris) adult foraging around a woodland pool, Cairngorms NP, Scotland, UK, November 2011

Ammonite / Group of African lion (Panthera leo) cubs play fighting with each other, footage taken at night using starlight camera technology, Masai Mara, Kenya.

Ammonite / Male White-throated / White-faced capuchin (Cebus capucinus) climbing and jumping in canopy, showing use of prehensile tail, Santa Rosa National Park, Costa Rica.

Ammonite / Northern tamandua (Tamandua mexicana) climbing down and falling out of tree, showing use of partially prehensile tail, Santa Rosa National Park, Costa Rica.

Ammonite / Northern tamandua (Tamandua mexicana) climbing down tree, showing use of partially prehensile tail, Santa Rosa National Park, Costa Rica.

Ammonite / White-throated / White-faced capuchin (Cebus capucinus) climbing and playing with twig, showing use of prehensile tail, Santa Rosa National Park, Costa Rica.

Ammonite / Juvenile Mantled howler monkey (Alouatta palliata) climbing through canopy, showing use of prehensile tail, Santa Rosa National Park, Costa Rica.

Ammonite / Mantled howler monkey (Alouatta palliata) climbing through canopy, showing use of prehensile tail, Santa Rosa National Park, Costa Rica.

Sandesh Kadur / Clouded leopard (Neofelis nebulosa), captive, part of a rehabilitation project, Manas National Park, Kokrajhar, Assam, India.

Eric Dragesco / Wild female Snow Leopard (Panthera uncia) jumping, camouflaged on rocky mountainside, at an altitude of 2500m, Altai mountains, Mongolia. July

Bence Mate / European bee-eater (Merops apiaster) view of tail feathers as it digs in sand, Pusztaszer, Kiskunsagi National Park, Hungary

Denis-Huot,Denis-Huot / Lion(Panthera leo) cub playing with its mothers tail, Masai-Mara Game Reserve, Kenya. Vulnerable species.

Fabrice Cahez / Red squirrel (Sciurus vulgaris) rear view of tail on moss covered tree, Allier, Auvergne, France, March

Richard Steel / 2020VISION / Male Redstart (Phoenicurus phoenicurus), perched on branch of flowering Hawthorn (Crataegus monogyna), Clwyd, Wales, UK, May. Did you know? Another common name for a Redstart is Firetail due to their...

Alex Hyde / Sting of Giant Forest Scorpion (Heterometrus laoticus / longimanus). Captive, originating from Vietnam / Thailand.

Mark Taylor / Tabby kittens, Stanley and Fosset, 12 weeks old, walking together.

Markus Varesvuo / Capercaillie (Tetrao urogallus) close up of male calling in the snow, Vaala Finland April

Mark Carwardine / Rear view of Dwarf minke whale, thought to form a yet-to-be named sub-species of the Common minke whale {Balaenoptera acutorostrata}, Ribbon Reefs, Great Barrier Reef, Queensland, Australia

Mark Carwardine / Tail flippers of Dwarf minke whale, thought to form a yet-to-be named sub-species of the Common minke whale {Balaenoptera acutorostrata}, Ribbon Reefs, Great Barrier Reef, Queensland, Australia

Mark Carwardine / Blue whale (Balaenoptera musculus) fluking, Baja California, Sea of Cortez (Gulf of California), Mexico, Endangered species

Mark Carwardine / Blue whale (Balaenoptera musculus) fluking, Baja California, Sea of Cortez (Gulf of California), Mexico, Endangered species

Mark Carwardine / Tailfin of Great white shark (Carcharodon carcharias) underwater, Guadalupe Island, Mexico (North Pacific)

Mark Carwardine / Humpback whale lobtailing {Megaptera novaengliae} Dominican Republic, Caribbean

Mark Carwardine / Humpback whale lobtailing {Megaptera novaengliae} Dominican Republic, Caribbean

Oriol Alamany / African elephant (Loxodonta africana) rear view Kruger National Park, Transvaal, South Africa, September.

Chris Mattison / Six-lined long-tailed lizard (Takydromus sexlineatus), captive, occurs South East Asia

Tui De Roy / Violet tailed sylph (Aglaiocercus coelestis) Guango private reserve, Papallacta Valley, Andean Cloud Forest, East slope, Ecuador

Alex Mustard / 2020VISION / Rear view of a Basking shark (Cetorhinus maximus), Cairns of Coll, Inner Hebrides, Scotland, UK, June.

Daniel Heuclin / Deathstalker / Palestine Yellow Scorpion (Leiurus quinquestriatus) against white background. Tunisia, Africa.

Konrad Wothe / Resplendent Quetzal (Pharomachrus mocinno costaricensis) male tail feathers hanging out of the nest, Costa Rica

Chris Gomersall / 2020VISION / Yellow wagtail (Motacilla flava flavissima) adult female perched in oilseed rape crop (Brassica napus) on arable farm, Hertfordshire, UK, April. Did you know? Although wagtails are almost constantly w...

Erlend Haarberg / Northern goshawk (Accipiter gentilis) bathing, Pusztaszeri Landscape Protected Area, Hungary, May

Orsolya Haarberg / Two Black grouse (Tetrao tetrix) males displaying at lek, Bergslagen, Sweden, April

Daniel Heuclin / Western Diamondback rattlesnake (Crotalus atrox) coiled and with tail raised and rattling, found in South Western USA, captive

Fabrice Cahez / Red fox (Vulpes vulpes) pouncing on prey, Vosges, France, September.

Fabrice Cahez / Red fox (Vulpes vulpes) pounding on prey, Vosges, France, September.

Edwin Giesbers / Indian elephant (Elephas maximus) close up of skin and tail, captive

Fabrice Cahez / Red fox (Vulpes vulpes) running, Vosges, France, August

Todd Mintz / Narwhal (Monodon monoceros) diving sequence 1/4, Pond Inlet, Nunavut, Baffin Island, Canadian Arctic, June

Pete Oxford / Eastern diamondback rattlesnake (Crotalus adamanteus) close up of rattle, The Orianne Indigo Snake Preserve, Telfair County, Georgia USA, captive

Bert Willaert / Pair of mating Mouse Opossums (Marmosops cf. noctivagus) hanging from prehensile tail. Ecuador,

Edwin Giesbers / Male Indian peafowl (Pavo cristatus) displaying, captive

Edwin Giesbers / Male Indian peafowl (Pavo cristatus) displaying, captive Not available for ringtone/wallpaper use.

Sven Zacek / Roe Deer (Capreolus capreolus) pronking away from the photographer. Virumaa, Estonia, Europe, February.

Ole Jorgen Liodden / Blue Whale (Balaenoptera musculus) tail fluke above water surface. Spitsbergen, Svalbard, August.

Andrew Parkinson / Rear view of Red squirrel tail (Sciurus vulgaris) foraging in deep snow, Cairngorms National Park, Scotland, UK, March.

John MacPherson / 2020VISION / Bottlenose dolphin (Tursiops truncatus) diving, Moray Firth, Inverness-shire, Scotland, UK, August 2011

Ernie Janes / Close up of tail sting of Hornet (Vespa crabro) UK

Anup Shah / Adolescent male Lions (Panthera leo) play fighting, Masai Mara National Reserve, Kenya, March

John MacPherson / 2020VISION / Two Bottlenose dolphins (Tursiops truncatus) breaching, Moray Firth, Inverness-shire, Scotland, UK, August. Photographer quote: 'After several frustrating hours with too short a lens and dolphins too...

Diane McAllister / Golden manteled ground squirrel (Spermophilus lateralis) holding its tail. Yellowstone National Park, Wyoming, USA, May

Hermann Brehm / Young Tigress (Panthera tigris), 22 month, being frightened by a dead leaf. Banghavgarh National Park, India, April.

Eric Baccega / Narwhal (Monodon monoceros) flipping its tail. Baffin Island, Nunavut, Canada, June.

Juergen Freund / Ornate ghost pipefish (Solenostomus paradoxus), detail of the tail. Lembeh Strait, North Sulawesi, Indonesia.

Alex Mustard / A batch of Leafy Seadragon (Phycodurus eques) eggs on the tail of a male. Wool Bay Jetty, Edithburgh, Yorke Peninsular, South Australia, November.

Edwin Giesbers / Close-up of European Otter (Lutra lutra) tail in water. Captive. The Netherlands.

Sergey Gorshkov / Kamchatka Brown bear (Ursus arctos beringianus) walking beside lake, Kamchatka, Far east Russia, August

Sergey Gorshkov / Red fox (Vulpes vulpes) two foxes at den in deep snow, Kamchatka, Far east Russia, November

Fergus Gill / Red grouse (Lagopus lagopus scoticus), portrait of a cock bird displaying to rival males. Cairngorms National Park, Scotland, April

Juan Carlos Munoz / Southern right whale (Eubalaena australis / Balaena glacialis australis) flipping its tail out of the water. Valdes Peninsula, Patagonia, Argentina, Oct 2008

Markus Varesvuo / White tailed sea eagle (Haliaetus albicilla) flying, Norway, July

Anup Shah / African Lioness (Panthear leo) charging in pursuit of prey, Masai Mara National Reserve, Kenya. March

Markus Varesvuo / Siberian Jay (Perisoreus infaustus) perched on snow covered pine tree, Kuusamo, Finland, February

Edwin Giesbers / Jaguar (Panthera onca) close-up of coat and tail, captive

Edwin Giesbers / Asian giant forest scorpion (Heterometrus longimanus) with tail raised, Sarawak, Borneo, Malaysia

Roger Powell / Arctic Tern (Sterna paradisaea) preening tail feathers, Varanger Fjord, Arctic Norway. June

Alex Mustard / Southern stingray (Hypanus americanus) swimming over sand ripples on sand bar, Grand Cayman, Cayman Islands. British West Indies. Caribbean Sea.

Alex Mustard / Close up of tail of Lemon shark (Negaprion brevirostris) in shallow water. Little Bahama Bank. Bahamas. Tropical West Atlantic Ocean.

Alex Mustard / Southern stingray (Hypanus americanus) swimming over sand ripples on sandbar, Stingray City, Grand Cayman. British West Indies.

Alex Mustard / Southern stingray (Hypanus americanus) swimming over sand ripples on sandbar, Grand Cayman, Cayman Islands.

Christophe Courteau / Tail of a Leopard (Panthera pardus) beside its kill, the legs of an Impala, dragged up into a tree, South Africa, July

Alex Hyde / Lined Leaf-tailed Gecko {Uroplatus lineatus} showing darker nocturnal colouration, camouflaged amongst dead palm fronds. Masoala Peninsula National Park, north east Madagascar.

Alex Hyde / Close up of coiled tail of Parson's chameleon {Calumma parsonii} showing scales and strong green colouration. Tropical rainforest, Masoala Peninsula National Park, north east Madagascar.

Rod Williams / Green / Emerald Tree Monitor (Varanus prasinus) head portrait climbing tree trunk. Captive, from Papua New Guinea, Indonesia

Mark Carwardine / Blue whale (Balaenoptera musculus) fluking / diving, Endangered species, Sea of Cortez, Baja California, Mexico

Mark Carwardine / Blue whale (Balaenoptera musculus) fluking / diving, Endangered species, Sea of Cortez, Baja California, Mexico

Michael D. Kern / Striped western diamondback rattlesnake (Crotalus atrox) captive, from USA