Rule 34 Dev - abs animal_genitalia animal_penis anthro ass ball_gag balls biceps big_balls big_penis bodily_fluids bondage bondage bound canid canine canine_penis canis collar digital_media_(artwork) domestic_dog dungeon erection fur gag gagged genital_fluids genitals german_shepherd hair herding_dog hi_res knot looking_at_viewer male mammal muscular muscular_anthro muscular_male nude pastoral_dog penis precum prison prisoner sheath solo submissive submissive_male teinwilde|5975826840