Helen Rosner on Twitter: "Someone please tell the redditors that she is a beautiful otter-panther-dog who is (we think) half border collie and half flat-coated retriever and she's 1.5 years old and
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Image result for flat coat retriever border collie mix | Dogs, Black dog, Cute dogs
Unleashed black flat coated retriever x border collie mix wearing dog harness and running on sandy beach along the coast Stock Photo - Alamy
We always thought he was a border collie and flat coat retriever mix, results at the end! : r/DoggyDNA
Golden Retriever Border Collie Mix: A Loving, Energetic Companion