Rule 34 Dev - anatomically_correct anatomically_correct_penis animal_genitalia animal_penis balls brown_fur collar duo erection ermine euplerid feral feral_on_feral fossa fossa_penis fur gradient_background heart knot licking male mammal multi_knot mustelid open_mouth paws penis precum sex sheath simple_background smile tongue tongue_out weasel weasely yaoi|3346550656