Rule 34 Dev - 1boy ambiguous_gender anal anus arms_behind_back ass bodily_fluids bound canid canine canis clothing cub dog domestic_dog duo furry gaping gaping_anus genitals male male/ambiguous male_only mammal manmosu_marimo mostly_nude nino_inukai original penis speculum sweat testicles underwear underwear_around_legs younger|2759911322