I want to definitely say: horse butt does NOT look like this, human butt does (which is what I think ML pulled from). Horse butt does not have the gluteal cleft that humans have; thinking anatomically, it makes sense that humans have that fold/cleft under their butt and horses and ponies don't have that there. See attached image which is not entirely anatomically correct. (Also autocorrect kept making stupid "fixes" to what I typed when tapping out this post: weird/unusual.) 

 >>/10393/
Gayi generated