abs animal_genitalia animal_penis anthro balls barn big_balls big_penis black_balls black_penis black_sheath bodily_fluids brown_body brown_fur crotch_shot detailed_background dripping equine_balls equine_genitalia equine_penis equine_sheath erection flared_penis fur genital_fluids genitals holding_penis huge_balls huge_penis inside leaking_precum male medial_ring mottled mottled_genitalia mottled_penis muscular muscular_male nude outside penis penis_focus precum precum_drip precum_string presenting presenting_balls presenting_penis saggy_balls sheath solo standing vein veiny_balls veiny_penis anotheranon equid equine horse mammal absurd_res hi_res
"Third leg"