Two options to help reunite pet owners with their lost dogs:
American Kennel Club's Companion Animal Recovery Program. A microchip is a permanent form of ID about the size of a grain of rice. For most animals, the chip is implanted just under the skin in the scruff of the neck. It is not a tracking device. When a hand-held scanner passes over the microchip, it reads the encoded number. This ID number is the only information stored in the microchip. Please contact your local veterinarian and/or visit http://www.akcreunite.org/
Michigan Department of Agriculture Tattoo Program. Tattoo Artists approved by the Michigan Department of Agriculture tattoo dogs with a state assigned, unique tattoo number (MI-(5 digit number)-A) in the dog's ear and inner thigh. The owners pay $1 to have the owner's contact information kept in the state registry. Individuals interested in having their dog tattooed should contact the MDA at 517-241-2748 to locate an individual approved by the department to tattoo dogs.