Our Rooster Farms Blue 1-100 Cattle Number Ear Tags Se are perfect for signing small or larger-sized livestock, cattle and animals, such as pigs, sheep, goats, cows, rabbits, dogs and so on. Easily and conveniently identify individual livestock in an instance using a numbered system. It can also be applied in breeding populations for epidemic prevention and control, meat quarantine, and all information needed for the management of livestock.