Rule 34 Dev - abstract_background accessory animal_genitalia animal_penis ball_gag balls black_hair blue_eyes bodily_fluids bound cock_ring equine_genitalia equine_penis erection feral gag gagged genitals hair harness harness_ball_gag harness_gag hooves jewelry male multiple_cock_rings muzzle_(object) muzzled penis penis_accessory penis_jewelry restrained rope saliva solo submissive submissive_male testicle_cuff lightikea equid equine horse mammal 3:4 hi_res|3260647530