Rule 34 Dev - animal_genitalia animal_penis anthro anus areola arm_tuft balls big_flare big_unflared_glans black_anus black_balls black_nipples black_penis black_sheath blonde_eyebrows blonde_hair bound brown_body brown_fur butt equine_anus equine_genitalia equine_penis erection eyebrows facial_markings fingers flared_penis fur genitals grey_eyes hair head_markings hooved_fingers hooves leg_tuft long_hair looking_at_viewer male mane markings multicolored_body multicolored_fur muscular nipples nude pecs penis sheath simple_background solo spots spotted_body spotted_fur spotted_markings standing tail tail_tied tan_body tan_fur tuft tufted_ears white_body white_fur yellow_tail conditional_dnp tgt1512 draft_horse equid equine horse mammal digital_media_(artwork) model_sheet|21400643635