Does a horse have a appendix?

The horse DOES NOT have an appendix. The equivalent organ in a horse is the CECUM, which serves as a fermentation vat for fiber in the digestive tract. As in humans, the cecum is part of the large intestine. Unlike the appendix, which is an appendage that can be removed (and is necessarily removed when infected), the cecum is an essential part of the horse's digestive tract.