Abstract: A miniaturized animal identification tag is provided for securement to a pierced earlobe of an animal. The tag comprises an inert body portion having a sealed capsule with integral depending stud portion. The body portion is of insignificant size compared to the animal's ear size. The stud is fixed in place on the animal's ear after insertion through the pierced lobe. The sealed capsule contains a miniaturized information moisture sensitive medium having animal identification indicia thereon peculiar to the animal. The medium, as stored in the sealed capsule, is protected from moisture and other environmental elements. The identification medium may be plastic microfiche where the identification indicia on the microfiche is only discernable by optical magnification.