Stomach ulcers are very common, with as many as 8 out of every 10 horses affected. Horses that leave their home property, or have stable mates that come and go, or live in stalls are much more likely to have ulcers. Unfortunately, very few horses with ulcers are ever diagnosed. Most of the time the symptoms are blamed on behavior problems or lameness issues, leaving the horse to suffer through more severe training, changes in exercise habits, or bute therapy, all of which can make the ulcer worse. The horse is particularly prone to stomach ulcers. They can cause many symptoms, such as irritability, poor hair coat, slow eating, teeth grinding, failure to gain weight, change in performance, and even colic. Please call if you suspect your horse may be battling ulcers as they are easily diagnosed and very treatable.