High Quality Content by WIKIPEDIA articles! A nose ring is a ring made of metal designed to be installed through the nasal septum of domestic cattle, usually bulls. Nose rings are often required for bulls when exhibited at agricultural shows. There also is a clip-on ring design used for controlling other cattle for showing or handling. Nose rings are also used to prevent pigs rooting, and to encourage the weaning of young calves and other livestock by discouraging them from suckling.