Microchips for dogs & cats provide the best form of identification. Every year, lost pets are reunited with their families because of microchips. Dog and cat microchipping is a simple procedure. A veterinarian simply injects the microchip, about the size of a grain of rice, beneath the surface of your pet’s skin between the shoulder blades. The process is similar to a routine injection and takes only a few seconds. No anesthetic is required.