Rule 34 Dev - 2023 abs anal anthro anus ass back_muscles ball_grab balls bed biceps canid canine canis closed_eyes deltoids domestic_dog duo feet fox furniture genitals head_back hi_res kneeling legs_up lying male male/male mammal maxima muscular navel nipples on_back on_bed open_mouth pecs penis perineum sex simple_background spread_legs spreading triceps vein veiny_penis white_background|10092096112