Wild Wonders of Europe / della Ferrera / Tornjak mountain sheep dog resting near herd of sheep in a partially flooded area, Livanjsko Polje (karst plateau) Bosnia and Herzegovina, May 2009
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Mark Raycroft / Australian Shepherd (Canis familiaris) guarding sheep
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Mark Raycroft / Australian Shepherd (Canis familiaris) puppy meeting sheep
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Mark Raycroft / Border Collie (Canis familiaris) herding sheep in pasture
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Nick Turner / Sheepdog with flock of sheep {Canis familiaris} Pembrokeshire, Wales, UK
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John Cancalosi / Border Collie, herding sheep, Herefordshire, England, United Kingdom, January
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John Cancalosi / Border Collie, herding sheep, Herefordshire, England, United Kingdom, January
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Mark Raycroft / Shetland Sheepdog (Canis familiaris) running
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Mark Raycroft / Shetland Sheepdog (Canis familiaris) jumping over wood pile
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Doug Perrine / Courtship of Chum / Dog / Silverbrite / Keta salmon (Oncorhynchus keta) in spawning stream, female in center, males on left and right, Sheep Bay, Prince William Sound, Alaska, USA, July
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Doug Perrine / Courtship of Chum / Dog / Silverbrite / Keta salmon (Oncorhynchus keta) in spawning stream, female in center, males on left and right, Sheep Bay, Prince William Sound, Alaska, USA, July
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Mark Raycroft / Shetland Sheepdog (Canis familiaris) running through tunnel
