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2023 5_fingers amphibian anthro anthro_on_anthro anus aquatic axolotl backsack balls bdsm biped bodily_fluids bondage bottomless bottomless_anthro bottomless_male bound brown_hair canid canine canis clothed clothing cum domestic_dog duo erection external_gills fingers fur genital_fluids genitals gills glans hair hi_res humanoid_genitalia humanoid_penis interspecies litharien_(litharien)male male/male mammal mole_salamander penis salamander tail yuguni yuguni_(yuguni)