Nick Turner / Men pulling on a rope in a tug of war competition, Cotswold Olimpicks, Chipping Campden, Gloucestershire, June 2011.
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Andrew Parkinson / Dunlin (Calidris alpina) adult trying to pull a worm out of the wet sand, September, Shetland Islands, UK, September.
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Tui De Roy / Flightless cormorant (Phalacrocorax harrisi), pair at nest with seaweed in beaks. Carcasses surrounding nest. Cape Douglas, Fernandina Island, Galapagos.
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Kristel Richard / Two eagle hunters mounted on Mongolian horses in tug of war game over dead goat during the Buzkashi games, at the Eagle Hunters Festival, near Sagsai, Bayan-Ulgii Aymag, Mongolia. September 2014..
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Kristel Richard / Two eagle hunters mounted on Mongolian horses in tug of war game over dead goat during the Buzkashi games, at the Eagle Hunters Festival, near Sagsai, Bayan-Ulgii Aymag, Mongolia. September 2014..
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Kristel Richard / Two eagle hunters mounted on Mongolian horses in tug of war game over dead goat during the Buzkashi games, at the Eagle Hunters Festival, near Sagsai, Bayan-Ulgii Aymag, Mongolia. September 2014..
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Kristel Richard / Eagle hunter mounted on Mongolian horse winning Buzkashi game after winning tug of war over dead goat, at the Eagle Hunters Festival, near Sagsai, Bayan-Ulgii Aymag, Mongolia. September 2014..
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Kristel Richard / Two eagle hunters mounted on Mongolian horses in tug of war game over dead goat during the Buzkashi games, at the Eagle Hunters Festival, near Sagsai, Bayan-Ulgii Aymag, Mongolia. September 2014..
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Kristel Richard / Two eagle hunters mounted on Mongolian horses in tug of war game over dead goat during the Buzkashi games, at the Eagle Hunters Festival, near Sagsai, Bayan-Ulgii Aymag, Mongolia. September 2014..
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Kristel Richard / Two eagle hunters mounted on Mongolian horses in tug of war game over dead goat during the Buzkashi games, at the Eagle Hunters Festival, near Sagsai, Bayan-Ulgii Aymag, Mongolia. September 2014..
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Florian Möllers / Giant Schnauzer x Hovawart dog and Maliois Herder x Dutch shepherd playing tug of war with Frisbee, Germany, September.
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Florian Möllers / Giant Schnauzer x Hovawart dog and Maliois Herder x Dutch shepherd playing tug of war with Frisbee, Germany, September.