Repetitive stereotypic behaviours like crib-biting, weaving and wind-sucking affect up to 10% of stabled horses and indicate significant welfare compromise.
The emergence of a stereotypy in a horse represents the nervous system establishing a coping mechanism for a welfare deficit — typically social isolation, restricted forage, and insufficient movement. These are wholly preventable with appropriate husbandry. The welfare community increasingly rejects anti-cribbing collars and weave guards as devices that punish a symptom without addressing the cause, and which may increase overall stress. Prevention through naturalistic management far outweighs any treatment once the behaviour is established.