Cribbing (also known as crib biting or windsucking) is one of many repetitive behaviors known as stereotypies, which are sometimes demonstrated by horses. A variety of devices have been utilized to prevent horses from cribbing, including hog rings. The AVMA condemns the use of hog rings or other devices placed around the teeth to prevent cribbing in horses. These devices are detrimental to the welfare and health of the horse due to the potential to cause persistent pain, damage to the gingiva, periodontal disease and abrasive wear to adjacent teeth. The AVMA encourages research to understand and address the underlying causes of cribbing.