This old scar on the neck of this horse not only shows the Y shaped wound but the damage caused by the sutures used to close the skin. There is no history here but I would guess that no subcutaneous sutures were used to relieve the skin tension.
There are 3 things to note here: 1) an obvious defect at the facial crest caused either from trauma or surgery, 2) a linear skull depression most likely from trauma, and 3) the eye has a large, round lower corpora nigra.
