Does My Mixed Breed Dog Have MDR1? What Shelter Dogs and Mixes Need
You don't need a purebred Collie to carry the MDR1 mutation. Millions of mixed breed dogs are at risk. Here's how to know if yours is one of them.
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Breeds Beyond Collies: Every Dog That Carries the MDR1 Mutation
MDR1 drug sensitivity isn't just a Collie problem. Dozens of breeds and countless mixed-breed dogs carry the mutation. Here's the complete list and what it means for your dog.
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