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young male blue merle and tan pedigree border collie in green grass with a blue toy ball Stock Photo - Alamy
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Slate merle tricolor Border Collie (slate merle,white and tan). Blue = diluted black. #bordercollie #slatem… | Border collie blue merle, Outside dogs, Border collie
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Colour: Blue Tricolour Merle. or tan point blue merle | Australian shepherd, Australian shepherd dogs, Dog leash training
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Light maltese blue merle,white and gold tan Border Collie (tricolor atypical merle dog). Not every maltese merle dog has dark c… | Dog breeds, Collie, Border collie
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