Here’s the bottom line: Veterinarians have been microchipping dogs, cats, ferrets, rabbits and horses for more than 25 years now, and there has not been a single published study by a veterinarian confirming that microchips cause cancer in companion animals.

Dr. Larry McGill, of Salt Lake City, UT, of the American College of Veterinary Pathology and also chairman of the American Veterinary Medical Association Member Services Committee, concedes that rumors about microchips causing cancer have persisted for years

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