Rule 34 Dev - abstract_background animal_genitalia animal_penis arm_over_shoulder balls canine_genitalia canine_penis closed_eyes crouching duo erection fluffy fluffy_tail furryratchet genitals heart_symbol hi_res kneeling knot knotted_penis looking_at_viewer machine male penis protogen sergal sheath smile tail tail_tuft tuft|12666348312