The above picture is a picture from a colic surgery performed by Drs. Higgins and Dredge. The horse had a tear in the tissue that suspends the intestine (mesojejunum) which allowed a part of the small intestine (jejunum) to get tied in a slip knot. The knot was corrected, the tear repaired and the horse is doing well.
The picture below is of the lips and front part of the upper and lower jaws on a 5-6 month old horse. This horse sustained an injury to its upper lip when it fell in a ditch and tore the gum/skin from the upper jaw. As a horse's body will sometimes do, it layed down excessive tissue as seen in the picture. The normal tissue is the light pink tissue that is around and next to the teeth. The darker pink tissue is granulation tissue which we were preparing to remove when the picture was taken. We were managing this case with multiple laser surgeries and injections with medications.