WHY USE EAR TAGS? - Wearing an ear tag for a cow is equivalent to giving each cow an identity. Farmers use ear tags on animal ears to record animal ancestry, date of birth, vaccination and other animal information. With these tags, the farmer can easily manage the records of each animal when raising the entire group of animals. Feature: DURABLE MATERIAL: This cattle ear tags are made of quality plastic. Fade resistant, more flexible, softer durable and will withstand extreme weather conditions;