Ear notching is used to identify individual animals and helps to track herd performance, for example deciding which animals to sell or cull is made easy by tracking a cow's history of calves.
 
SMALL 6" U LVS01436 (PIG)
SMALL 6" V LVS01437 (PIG)
MEDIUM U LVS01440 (SHEEP)
LARGE U LVS01438 (CATTLE)