[header] How to stop your horse from chewing things [title] Determine if your horse is bored. [step] Your horse is likely to chew or crib (grab objects and suck air through them) if he is kept in a stall. This is especially true if you have an energetic horse that is stalled for several days at a time without much to watch or little social interaction. 
You may also notice a bored horse : [substeps] Weave or pace kick the sides of the stalls show separation anxiety toss his head become aggressive [title] Give your horse some space. [step] Make sure your horse can spend time in open space, such as a pasture or paddock.