Well there is wood chewing and actual cribbing.
Cribbers will hook there upper jaw on any surface they can hook onto and they will pull back and suck air. I knew one mare in a hot wire pasture that would latch on to the water trough and the big pasture blocks of alfalfa.
1. Collar so that they cannot fully pull and stretch the muscles at the throat.
2. Acupuncture - seriously, there are areas targeted for cribbing.
- could stem from ulcers and upset gut or lead to it.
- could stem from anxiety
5. Dr. Britt from Roadrunner Vet Clinic in Plant City, Fl put nose rings for hogs on the above mentioned mare. He pinched 2 on first and then later added 2 more. The mare did great for months and then ended up getting out of her pasture one night and paced trying to get back. She started cribbing again after and didn't matter what you did.
6. Give the horse a steady job - boredom is # 1 culprit
7. "Hook proof" every accessible surface. One boarder had to hammer nails in her stall for her horse. She placed them about 1" apart and angled the heads enough so that he couldn't grab those. He only did it in the stall.
8. When stalled, give them all the hay they can eat, place a salt brick, and give them boredom breaker toys.
9. Provide plenty of turnout and distraction.