Rule 34 Dev - 2023 4_toes 5_fingers abs akineza animal_genitalia animal_penis anthro artist_name balls barefoot blue_eyes blue_genitals blue_nipples blue_pawpads blue_penis breasts brother brother_and_sister canid canine canine_genitalia canine_penis canis claws digital_media_(artwork) duo erection eyebrows feet female finger_claws fingers foot_fetish foot_play footjob fur genitals grey_body grey_fur hair hi_res incest knot kuroitsune_(character) licking licking_lips licking_own_lips long_hair male mammal navel nipples nude open_mouth pawpads paws penile penis purple_hair sex sibling sister sitting toe_claws toes tongue tongue_out twincest twins wolf|9340052736