anthro anus ass_to_ass balls barn big_balls big_butt black_anus brown_body butt duo equine_anus equine_balls equine_genitalia fur genitals green_eyes hay looking_at_viewer male male/male mohawk muscular nude perineum presenting presenting_anus presenting_hindquarters puffy_anus raised_tail rear_view sky take_your_pick thick_thighs white_body white_fur pawrn equid equine horse mammal