animal_genitalia animal_penis balls big_balls black_balls bodily_fluids cellulite equine_genitalia equine_penis feral genitals glistening glistening_genitalia hooves inviting lying male medial_ring mottled mottled_genitalia mottled_penis musk musk_clouds on_back penis presenting presenting_penis smile solo spread_legs spreading sweat sweaty veiny_thighs muskfarm equid equine horse mammal hi_res