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An injurious habit of horses in which they bite at the edge of a feed trough or other object and swallow air at the same time.


A behavior disorder of horses in which the animal grasps the edge of an adjacent building fixture and presses down, raising the floor of its mouth, forcing the soft palate open, and sometimes swallowing air.
See: aerophagia
See also: wind-sucking


a rack or manger in a stable.

a neurosis or acquired habit in stabled horses characterized by stereotypic behavior. The horse grasps a solid object with its incisor teeth, arches the neck, pulls upwards and backwards and swallows air. The consequences are eroded teeth, occasionally gastric distention and severe weight loss. Called also wind-sucking, cribbing.
Enlarge picture
Incisor teeth of a crib biter. By permission from Knottenbelt DC, Pascoe RR, Diseases and Disorders of the Horse, Saunders, 2003
crib-biting operation
partial myectomy of the sternohyoideus muscle prevents ventral flexion of the head; not commonly performed. An alternative procedure involves neurectomy of the spinal accessory nerve.