Colic—a catchall term for any abdominal pain—is not a possibility to take lightly. At best, the source of the discomfort might be a slight accumulation of gas or a mild impaction that passes on its own. More severe blockages might be caused by ingested sand, enteroliths (stone-like mineral concretions that form in the horse’s gut) or other obstructions. These are more likely to require surgery.
The most serious
