Livestock ear tags, and livestock tagging in general, play an important role in livestock identification and management. The following are some examples of such roles: livestock gender identification, for example, right ear tags for female livestock and left ear tag for male livestock, livestock age determination using different colors of ear tags, parents’ information and pedigree, and identification of problematic livestock, diseases, treatments, and reproduction, including the identification of biparous and multiparous offspring. This information is determined by what you enter into your livestock management software.