Horse Crib-Biting: Understanding and Managing Stereotypies

Crib-biting is an oral stereotypy in horses associated with stress and limited natural behaviour opportunities in captivity.

Key Facts

Crib-biting involves the horse grasping a fixed surface with its teeth and contracting neck muscles to gulp air
It is classified as a stereotypy — a repetitive, invariant behaviour with no immediate function
Weaning stress, limited foraging time, and social isolation are key risk factors
Crib-biting releases endorphins, providing a self-soothing function for stressed horses
Anti-crib collars prevent the behaviour but do not address underlying welfare deficits
Horses that crib-bite have higher rates of some types of colic but the causal relationship is debated

Welfare Considerations

Crib-biting develops when horses cannot express natural behaviours such as continuous grazing, social interaction, and movement. It is a welfare indicator reflecting chronic frustration or stress. Management responses that focus solely on physical prevention — collars, surgery — suppress the symptom without improving welfare. Welfare-centred management addresses root causes: increasing forage availability, providing social contact, extending turn-out time, and reducing abrupt management changes. Once established, stereotypies rarely disappear even when conditions improve, making early prevention critical.

What You Can Do

Maximise daily turn-out time and social contact for horses at risk
Ensure continuous forage access — horses should never have empty stomach periods exceeding 4 hours
Avoid abrupt weaning methods; gradual approaches reduce stress in foals
Do not use anti-crib collars as a substitute for improved husbandry
Consult an equine behaviourist if stereotypies develop despite good management