Rule 34 Dev - anal anal_sex anthro black_body black_fur black_pawpads brown_body brown_fur canid canine canis duo erection feral fur gay genitals knot male male/male male_only mammal markings pawpads penetration penis pink_knot pink_penis pink_tongue red_body red_fur red_knot red_markings red_penis size_difference tongue venlightchaser wolf|13095667048