FURVERT!

2014 all_fours animal_genitalia animal_penis anus backsack balls big_balls butt equid equine equine_genitalia equine_penis erection feet feral fur genitals glistening green_eyes grin hair happy hooves horse long_hair looking_at_viewer looking_back male mammal naughty_face penis pink_penis presenting presenting_hindquarters purple_background purplepardus raised_leg shadow simple_background smile solo standing teeth thick_penis vein