Here is a photo of a mature zebra stallion. (Credit to John Bellucci) Notice the amount of wrinkles through the throat and jowls. A young colt would not have this, so could not be used as reference mounting/judging a large, mature stallion. The picture below is my first zebra mount. Compare to the live one and I certainly did not over-do the bunches of skin, if anything, I under-did them. I am not asking for a critique of my zebra (unless you are only referring to the throat/jowl area) I am simply sharing a reference that is not always paid attention to.