The term “double merle” refers to a dog bred by two merle colored parents. Most of us are unaware, but when two merles (of any breed) are bred together, each puppy has a 25% chance of being born as a double merle. Common breeds with the merle trait include: Australian Shepherd, Border Collie, Catahoula Leopard, Chihuahua. Collie, Dachshund, & Great Dane just to name a few. Born with excessive white coloration, these dogs are known to have eye abnormalities, hearing impairments or sometimes even both. Double Merle puppies are often dumped into shelters or left to fend for themselves.
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