Red merle border collie puppy in front of a white background Stock Photo - Alamy
Red Merle Border Collie: Facts, Genetics & More (With Pictures)
Premium Photo | Red merle border collie, 6 months old,
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Composition Notebook: Border Collie Dog Notebook - Red Border Collie, Red Merle Border Collie, and Black Border Collie: Designs, YM and SM: Amazon.com: Books
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Red merle Border Collie in garden. News Photo - Getty Images