My horse grabs his stall door with his front teeth, arches his neck then pulls back and seems to suck in air. Why is he doing this and is it a problem?

This behavior is known as “cribbing”. There is evidence that cribbing releases chemicals in the brain known as endorphins. Some horses learn to arch their neck and swallow air without needing to grasp an object with their teeth, but this is rare. Some horses will also get into a habit of chewing wood. Cribbing can …

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