Horses have a simple stomach and, for our purposes here, the stomach and small intestine are unremarkable and similar to other monogastric species. However, the equine large intestine is massive and anatomically complex in comparison to most other animals. The small intestine empties ingesta into the cecum through the ileocecal orifice. The cecum also houses the cecocolic orifice, from which its contents flow into the colon. The colon itself is huge and, by folding on itself several times, is divided into segments and subsegments as follows: