Mark Taylor / Roborovski Hamster (Phodopus roborovskii) asleep sitting up, against white background
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) male brooding snoozing young chick. Atka Bay, Antarctica. August.
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Sven Zacek / Ural owl (Strix uralensis) female snoozing on nest at dusk. Tartumaa, Southern Estonia. March.
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Michael Pitts / Hawaiian Monk seal (Monachus schauinslandi) sleeping on the deck of a wrecked barge. Midway atoll. Central Pacific.
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Mark Taylor / Cute tabby kitten, Fosset, 5 weeks, sleeping in a Father Christmas hat, against white background
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Mark Taylor / Munsterlander, Helena, 5 months, lying asleep with her chin on the floor, against white background
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Jeff Vanuga / Greater Flamingos (Phoenicopterus roseus) sleeping at the Parc Ornithologique Pont De Gau, Les Saintes Maries de la Mer, Camargue, France, May.
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Jeff Vanuga / Greater Flamingos (Phoenicopterus roseus) sleeping at the Parc Ornithologique Pont De Gau, Les Saintes Maries de la Mer, Camargue, France, May.
Ernie Janes / *** Starlings (Sturnus vulgaris) on power lines at sunset, UK, October.
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Michael Durham / Western small-footed bat (Myotis ciliolabrum) roosting on rock at night, near Sulphur Springs, Washington, USA, June.
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Michael Durham / Western small-footed bat (Myotis ciliolabrum) roosting on a rock at night, near Sulphur Springs, High desert, Washington, USA, June.
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Michael Durham / Western small-footed bat / myotis (Myotis ciliolabrum) roosting on a rock at night, near Sulphur Springs, Washington, USA, June.
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Michael Durham / Solitary male Townsend's big-eared bat (Corynorhinus townsendiii) roosting in an abandoned house, Central Oregon, USA, June.
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Michael Durham / Evening bat (Nycticeius humeralis) roosting in crack of dead tree, Central Texas, USA, March.
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Aflo / Puppies asleep on sofa with blanket.
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Fabrice Cahez / Red fox (Vulpes vulpes) cubs resting in grass, Vosges, France, May.
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Fabrice Cahez / Red fox (Vulpes vulpes) cubs resting in grass, Vosges, France, May.
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Fabrice Cahez / Red fox (Vulpes vulpes) cubs resting in grass, Vosges, France, May.
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Fabrice Cahez / Red fox (Vulpes vulpes) cubs resting in grass, Vosges, France, May.
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Fabrice Cahez / Red fox (Vulpes vulpes) cubs resting in grass, Vosges, France, May.
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Konrad Wothe / Three-toed Sloth (Bradypus tridactylus) sleeping in rainforest tree at Tambopata river, Tambopata National Reserve, Peru, South America.
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Juan Carlos Munoz / Mixed flock of White storks (Ciconia ciconia), Common spoonbills (Platalea leucorodia) and Cattle egrets (Bubulcus ibis) settling to roost in a tree, Doñana National Park, Andalusia, Spain, May.
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Christophe Courteau / Walrus (Odobenus rosmanus) colony hauled out on a beach, Poolpynten, Svalbard, Norway, June, 2012.
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Edwin Giesbers / Oriental small clawed otter (Aonyx cinerea), captive.
Michele Westmorland / Woman filming Galapagos sea lion (Zalophus wollebaeki) on the beach of Islabela Island, Galapagos Island, Model released.
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Mark Taylor / Cute Toy goldendoodle puppy sleeping on teddy bear.
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Nick Upton / Torpid Common / Hazel dormouse (Muscardinus avellanarius) found sleeping in a Dormouse nestbox set out by Backwell Enviroment Trust in coppiced woodland near Bristol, Somerset, UK, June.
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Nick Upton / Torpid Common / Hazel dormouse (Muscardinus avellanarius) sleeping while held in human hand during a survey by Backwell Enviroment Trust in coppiced woodland near Bristol, Somerset, UK, June. Model re...
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Florian Möllers / Common cranes (Grus grus) gathering at a roost site, Rhinluch NABU Reserve, Brandenburg, Germany, October.
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Andy Rouse / African Lion (Panthera leo) male lion 'Notch' sleeping on plains at sunset, taken with fish eye lens, Masai Mara, Kenya
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Andy Rouse / Cheetah (Acinonyx jubatus) cub sleeping on mother's back, Maasai Mara, Kenya, Africa
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Diane McAllister / Japanese Macaque (Macaca fuscata) adult resting in hot springs of Jigokudani, Japan.
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Jane Burton / Sleepy silver tabby chinchilla Persian male cat, 'Cosmos'.
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Jane Burton / Ginger cat 'Benedict' asleep.
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Jane Burton / Sleepy ginger female cat 'Lucky'.
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Roland Seitre / Little Bent-winged Bats (Miniopterus australis) in cave,Touaourou mission, Yate, South Province, New Caledonia
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Roland Seitre / Little Bent-winged Bats (Miniopterus australis) in cave,Touaourou mission, Yate, South Province, New Caledonia
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Roland Seitre / Little Bent-winged Bats (Miniopterus australis) in cave,Touaourou mission, Yate, South Province, New Caledonia
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Roland Seitre / Little Bent-winged Bats (Miniopterus australis) in cave,Touaourou mission, Yate, South Province, New Caledonia
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Alex Mustard / A large Rainbow Parrotfish (Scarus guacamaia) sleeps at night inside the wreck of the Oro Verde. Seven Mile Beach, Grand Cayman, Cayman Islands, British West Indies.
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Ernie Janes / Yellow Labrador sleeping on owners bed.
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Ernie Janes / Yellow Labrador sleeping on owners bed with teddy bear.
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Jane Burton / Black Pug puppy snoozing with a black kitten.