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.