Rule 34 Dev - 69_position anthro balls duo erection fellatio genitals knot larger_male lying male male/male male_penetrated male_penetrating male_penetrating_male on_back oral oral_penetration penetration penile penis sex size_difference smaller_male no_swift captain_otter elvin jad'thor canid canine canis hybrid mammal mustelid otter wolf hi_res|2492115920