Bernard Castelein / Grey seal (Halichoerus grypus) lying down, Helgoland, Germany

Andrew Parkinson / Bengal tiger (Panthera tigris tigris) portrait of a 19-month male. Bandhavgarh National Park, Madhya Pradesh, India.

Solvin Zankl / Meerkat (Suricata suricatta) juvenile peering out from under resting group of adults, South Africa

Igor Shpilenok / Brown bear {Ursus arctos} resting in the spring sunshine, Kronotsky Zapovednik, Kamchatka, Far East Russia

Suzi Eszterhas / Bat-eared Fox (Otocyon megalotis) parent and pup, Masai Mara, Kenya

Mitsuaki Iwago / Giant Panda (Ailuropoda melanoleuca), captive bred cub, China

Mitsuaki Iwago / Australian Sea Lion (Neophoca cinerea) resting with seaweed on its head, Australia

Jouan & Rius / Eastern grey kangaroo (Macropus giganteus) resting on beach, Queensland, Australia

Inaki Relanzon / Clouds of Monarch butterflies {Danaus plexippus} flying and resting on trees while on migration, Miochacan, Mexico, January 1997

Steven Kazlowski / walrus, Odobenus rosmarus, resting on pack ice during spring breakup, Chukchi Sea, off the National Petroleum Reserves, Alaska

Steven Kazlowski / Crabeater seal (Lobodon carcinophagus) resting on ice along the western Antarctic Peninsula, Southern Ocean

Ross Hoddinott / Common blue butterfly {Polyommatus icarus} resting on Bee orchid {Ophrys apifera}, Bude, Cornwall.

Anup Shah / Banded mongoose {Mungos mungo} sniffing around the head of a resting Warthog for insects{Phacochoerus aethiopicus} East Africa

Anup Shah / Hippopotamus {Hippopotamus amphibius} resting with young, Masai Mara GR, Kenya

Anup Shah / African lion {Panthera leo} lioness resting, portrait, Masai Mara GR, Kenya

Anup Shah / African lion {Panthera leo} lioness resting, Masai Mara GR, Kenya

Rolf Nussbaumer / Common Tree Frog {Hyla arborea} adult resting in wild rose bush, National Park Lake Neusiedl, Austria, April

Jose B. Ruiz / Pyrenean brown bear (Ursus arctos pyrenaicus) resting on rocks, Spanish Brown Bear Foundation, Cantabrian mountains, Asturias, Spain

Eric Baccega / Sumatran tiger (Panthera tigris sumatrae) resting. Captive, IUCN red list of endangered species

Birgitte Wilms / Nudibranch laying eggs, Indonesia

Ross Hoddinott / Common blue butterfly {Polyommatus icarus} resting on plantain, Dorset. UK

Ross Hoddinott / Common blue butterfly {Polyommatus icarus} resting on bee orchid {Ophrys apifera}, Cornwall. UK

Ross Hoddinott / Marsh fritillary {Euphydryas aurinia} butterfly resting on grass, Vealand fram {Devon Wildlife Trust nature reserve} near Holsworthy, Devon. UK

Ross Hoddinott / Banded demoiselle {Calopteryx splendens} resting on grass head, Tamar Lake, Cornwall. UK

Georgette Douwma / Longnose hawkfish (Oxycirrhites typus) resting in Gorgonian coral. Red Sea, Egypt.

Georgette Douwma / Longose hawkfish (Oxycirrhites typus) resting on Gorgonian coral. Red Sea, Egypt.

Rolf Nussbaumer / Ocelot {Felis pardalis} captive, leg and paw of female resting, Welder Wildlife Refuge, Texas, USA

Mitsuaki Iwago / African Lion (Panthera leo) mother and cub, Serengeti National Park, Tanzania

Suzi Eszterhas / Cheetah (Acinonyx jubatus) mother and seven day old cub, Maasai Mara Reserve, Kenya

Suzi Eszterhas / Cheetah (Acinonyx jubatus) mother and eight to nine week old cubs, Maasai Mara Reserve, Kenya

Nick Gordon / Woolly spider monkey {Brachyteles arachnoides} resting in rainforest tree, Amazonia, Brazil

Anup Shah / Sumatran Orang utan female with young resting in nest made in tree (Pongo pygmaeus abelii) Gunung Leuser NP, Sumatra, Indonesia

Paul Hobson / Whooper swan at rest on frosty ground (Cygnus cygnus), Lancashire, UK

Ingo Arndt / European River Otter (Lutra lutra) sisters resting, Europe

Ingo Arndt / European River Otter (Lutra lutra) sisters resting, Europe

Suzi Eszterhas / African Lion (Panthera leo) adult female with rainbow in background, vulnerable, Masai Mara National Reserve, Kenya

Yva Momatiuk & John Eastcott / Grizzly Bear (Ursus arctos horribilis) 4 month old cubs trying to engage mother in play, Katmai National Park, Alaska

Mark Raycroft / Australian Kelpie (Canis familiaris) laying in grass

Mark Raycroft / Bullmastiff (Canis familiaris) adult and puppy

Mark Raycroft / Australian Shepherd (Canis familiaris) mother and puppy laying on grass

Mark Raycroft / German Shorthaired Pointer (Canis familiaris) laying on rock wall

XI ZHINONG / Wild White-Lipped Deer (Przewalskium albirostris)females, Kekexili, Qinghai, Tibetan Plateau, China. Vulnerable species.

George Sanker / Elk / Wapiti (Cervus canadensis) resting by water, calf waiting for mother. Grand Teton National Park, Wyoming, USA, June.

George Sanker / Bull Elk (Cervus canadensis) resting by water. Autumn in Banff National Park, Alberta, Canada, October.

Carol Walker / Photographer Carol Walker with her adopted wild horses / mustangs Claro, Cremosso and Mica, rounded up from the McCullough Peak herd and Adobe Town Herd in Wyoming. Resting in their corral, Colorado,...

Carol Walker / Photographer Carol Walker with her adopted wild horses / mustangs Claro, Cremosso and Mica, rounded up from the McCullough Peak herd and Adobe Town Herd in Wyoming. Resting in their corral, Colorado,...

Carol Walker / Photographer Carol Walker with her adopted wild horses / mustangs Claro, Cremosso and Mica, rounded up from the McCullough Peak herd and Adobe Town Herd in Wyoming. Resting in their corral, Colorado,...

Richard Du Toit / Burchell's Zebra (Equus burchellii) resting its head on the back of another, Rietvlei Nature Reserve, Gauteng, South Africa

Denis-Huot / Lion (Panthera leo), and old and a young cub resting together, Masai-Mara game reserve, Kenya

Andrew Cooper / Black Hereford cross cattle (Bos taurus). Hound Tor, Dartmoor National Park, UK, August.

David Pattyn / Dalmatian Pelicans (Pelecanus crispus) resting on water. Lake Kerkini, Greece, February 2012.

David Pattyn / Dalmatian Pelicans (Pelecanus crispus) resting on lake in dawn light. Lake Kerkini, Greece, March 2012.

Colin Varndell / Red Admiral Butterfly (Vanessa atalanta) on Michaelmas daisy flowers. Dorset, UK, October 2012.

Richard Steel / 2020VISION / Female Eider (Somateria mollissima) resting on bladderwrack (Fucus) seaweed, Northumburland, England, UK, July.

Fergus Gill / 2020VISION / Sanderling (Calidris alba) resting by the shoreline, in breeding plumage, Outer Hebrides, Scotland, UK, June.

Nick Upton / Male Dance Fly (Empis tessellata) resting on a leaf, Wiltshire garden, UK, May.

Nick Upton / Male March fly (Bibio lanigerus) resting on grass stem in heathland, Sandy, Bedfordshire, UK, April.

Nick Upton / Male March fly (Bibio lanigerus) resting on grass stem in heathland, Sandy, Bedfordshire, UK, April.

Nick Upton / Narrow-bordered Five-spot burnet moth (Zygaena lonicerae) newly emerged, resting on grass stems in a chalk grassland meadow, Wiltshire, UK, May.

Nick Upton / Male Non-biting chironomid midge (Chironomus sp.) with plumose antennae resting on a dead plant stem on heathland, Sandy, Bedfordshire, UK, April.

Nick Upton / Marsh fritillary butterfly (Euphydryas aurinia) resting on dead plant stem in a chalk grassland meadow, Wiltshire, UK, May.

Nick Upton / Spotted longhorn beetle (Rutpela maculata / Strangalia maculata) resting on a leaf in a woodland clearing, Wiltshire, UK, June.

Colin Varndell / Green veined white butterfly (Pieris napi) at rest on buttercup buds, Dorset, UK

Colin Varndell / Broad bodied chaser dragonfly (Libellula depressa) mature female at rest, Dorset, UK

Colin Varndell / Black sympetrum dragonfly (Sympetrum danae) male at rest, Studland Heath NNR, Dorset, UK

Nick Upton / Lapwings (Vanellus vanellus) resting on flooded meadow on the Somerset Levels after several days of heavy rain, UK, December.

Nick Upton / Lapwings (Vanellus vanellus) resting and foraging on flooded meadow on the Somerset Levels after several days of heavy rain, UK, December.

Nick Upton / Herring gulls (Larus argentatus) landing and standing and calling on a wave washed rock near the shore at high tide, as others forage for invertebrates in the water nearby, Looe, Cornwall, UK, June.

Nick Upton / Herring gulls (Larus argentatus) landing and standing on a wave washed rock near the shore at high tide, Looe, Cornwall, UK, June.

Nick Upton / Eiders (Somateria mollissima) three males in eclipse plumage and a female roosting on sandstone shore at high tide, Fife, UK, July.

Nick Upton / Eiders (Somateria mollissima) three female duck roosting on sandstone shore at high tide, Fife, UK, July.

Mark Hamblin / 2020VISION / View across Loch Lurgainn to Cul Beag and Cul Mor, with woman hiker and Springer spaniel (Canis familiaris) resting on rocks in the foreground, Ben Mor Coigach Scottish Wildlife Trust reserve, Coigach...

Hermann Brehm / Jaguar (Panthera onca) female rolling, Pantanal, Brazil

Juan Manuel Borrero / Red-eyed Treefrog (Agalychnis callidryas) resting on a leaf, captive from South America

Juan Manuel Borrero / Red-eyed Treefrog (Agalychnis callidryas) resting on bromeliad flower, captive from South America

Juan Manuel Borrero / Red-eyed Treefrog (Agalychnis callidryas) resting on bromeliad flower, captive from South America

Staffan Widstrand / Walrus (Odobenus rosmaris) resting portrait, Svalbard, Norway

Staffan Widstrand / Polar Bear (Ursus maritimus) rolling around on snow and ice, Svalbard, Norway

Staffan Widstrand / Walrus (Odobenus rosmaris) small group resting on ice floe, Svalbard, Norway, July

Staffan Widstrand / Walrus (Odobenus rosmaris) close up of face with animal resting and yawning, Svalbard, Norway

Staffan Widstrand / Polar Bear (Ursus maritimus) resting on snow, Svalbard, Norway

Staffan Widstrand / Ringed seal (Pusa hispida) hauled out on small rock, Svalbard, Norway

Uri Golman / White rhinoceros (Ceratotherium simum) mother browsing and calf resting, Entabeni Safari Conservancy, Limpopo region, Waterberg, South Africa, October

Wild Wonders of Europe / Muñoz / Willow emerald damselfly (Lestes viridis) at rest, Campanarios de Azaba Biological Reserve, a rewilding Europe Area, Salamanca, Castilla y Leon, Spain

Wild Wonders of Europe / Muñoz / Willow emerald damselfly (Lestes viridis) at rest, Campanarios de Azaba Biological Reserve, a rewilding Europe Area, Salamanca, Castilla y Leon, Spain

Wild Wonders of Europe / Muñoz / Small red damselfly (Ceriagrion tenellum) at rest, Campanarios de Azaba Biological Reserve, a rewilding Europe Area, Salamanc, Castilla y Leon, Spain

Wild Wonders of Europe / Muñoz / Emperor Dragonfly (Anax imperator) resting portrait, Campanarios de Azaba Biological Reserve, a rewilding Europe Area, Salamanca, Castilla y Leon, Spain

Wild Wonders of Europe / Muñoz / Emperor Dragonfly (Anax imperator) close up of resting individual, Campanarios de Azaba Biological Reserve, a rewilding Europe Area, Salamanca, Castilla y Leon, Spain

Wild Wonders of Europe / Muñoz / Emperor Dragonfly (Anax imperator) at rest, Campanarios de Azaba Biological Reserve, a rewilding Europe Area, Salamanca, Castilla y Leon, Spain

Wild Wonders of Europe / Muñoz / Emperor Dragonfly (Anax imperator) at rest, Campanarios de Azaba Biological Reserve, a rewilding Europe Area, Salamanca, Castilla y Leon, Spain

Wild Wonders of Europe / Muñoz / Emperor Dragonfly (Anax imperator) at rest, Campanarios de Azaba Biological Reserve, a rewilding Europe Area, Salamanca, Castilla y Leon, Spain

Wild Wonders of Europe / Muñoz / Emperor Dragonfly (Anax imperator) at rest, Campanarios de Azaba Biological Reserve, a rewilding Europe Area, Salamanca, Castilla y Leon, Spain

Wild Wonders of Europe / Muñoz / Emperor Dragonfly (Anax imperator) at rest, Campanarios de Azaba Biological Reserve, a rewilding Europe Area, Salamanca, Castilla y Leon, Spain

Wild Wonders of Europe / Muñoz / Emperor dragonfly (Anax imperator) at rest, Campanarios de Azaba Biological Reserve, a rewilding Europe Area, Salamanca, Castilla y Leon, Spain

Wild Wonders of Europe / Muñoz / Small red damselfly (Ceriagrion tenellum) resting profile, Campanarios Azaba Biological Reserve, a rewilding Europe Area, Salamanc, Castilla y Leon, Spain

Wild Wonders of Europe / Muñoz / Damselfly (Coenagrion scitulum) Campanarios de Azaba Biological Reserve, a rewilding Europe Area, Salamanc, Castilla y Leon, Spain