Implantable RFID Glass Pets Tags, which has high security and high reliability, anti-bacterial, anti-allergy, anti-rejection. Used by governments, institutions, the fish industry, for animal identification, scientific research and wild life management. 1.25*7mm now is smallest sized pet microchip, widely used for tagging fish, mice, etc such very small animals; while 2x12mm is the common sized and popularly used on the market for dog, cat, horse, etc.