Carol Walker / Friesian horse, black stallion running in field, Livingston, Montana, USA
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Carol Walker / Lusitano horse, grey stallion trotting, Portugal
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Carol Walker / Herd of horses on ranch with mountains in background, Jackson Hole, Wyoming, USA, July 2011
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Kristel Richard / Portrait of a grey Andalusian stallion, in Ciutadella, Menorca, Spain.
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Carol Walker / Wild horse / mustang called Mica, rounded up from Adobe Town Herd Management Area in Wyoming and adopted by photographer Carol Walker. Running in pasture, Colorado, USA.
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Kirkendall-Spring / Horses (Equues caballus) grazing in open landscape. Columbia County - Eastern Washington. Washington, USA, August.
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Eric Baccega / Five day old purebred Andalusian foal (Equus caballus) playing in a field, Alsace, France, May.
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Kristel Richard / A group of Pure Arab, Shagya Arab and East Bulgarian fillies running in snow, Kabiuk National Stud, Shumen, Bulgaria.
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Nick Upton / Grey Irish Gypsy cob stallion (Equus caballus) grazing rough pastureland on Hackpen Hill with Oilseed rape (Brassica napus) and other arable crops in the background, The Ridgeway, Winterbourne Bassett...
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Kristel Richard / Two Lipizzaner colts standing next to each other, Stubalpe, near Koflach, Styria, Austria, September. Editorial use only.
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Jeff Vanuga / Guardian riding Camargue horse through water at sunrise, Camargue, Bouches du Rhone, France, May 2013.
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Carol Walker / Wild Mustang horse mare and foal, Sand Wash Basin Herd Area, Wyoming, USA.
