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Cribbing (horse)
Cribbing or crib biting is an abnormal, compulsive behavior or stereotypy seen in some horses, and considered a stable vice. It involves the horse grabbing a solid object such as the stall door or fence rail with its incisors, then arching its neck, pulling against the object, and sucking in air. Windsucking is a related behavior whereby the horse arches its neck and sucks air into the windpipe without needing to grab a solid object. Windsucking is thought to form part of the mechanism of cribbing, rather than being defined as an entirely separate behavior.〔 Cribbing and windsucking have been linked as a causal effect to colic and stomach ulcers.〔
A similar but unrelated behavior, wood-chewing or lignophagia, is another undesirable habit observed in horses, but it does not involve sucking in air; the horse simply gnaws on wood rails or boards as if they were food.
==Negative consequences==
Cribbing and windsucking have been linked to a higher incidence of stomach ulcers and are also defined as risk factors for certain types of colic. Colic can also be a consequence of wood chewing due to the ingestion of wood splinters. Both cribbing and wood chewing can cause excessive wearing and deterioration of the teeth in severe cases. Horses displaying these behaviors may be less desirable to potential buyers and may be devalued as a consequence.
It has been anecdotally reported that horses can learn to copy these behaviors from other horses, although this has not been substantiated by scientific study. Wood chewing also is destructive to barns and fences, sometimes requiring costly repairs and ongoing maintenance.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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