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anal anal_penetration animal_genitalia animal_penis anthro balls bodily_fluids container cum cum_in_container cum_in_jar equid equine equine_genitalia equine_penis genital_fluids genitals group jar lying male male/male mammal masturbation medial_ring nude on_back penetration penis red_eyes restricted_palette space_dog yellow_sclera zwitterkitsune zwitterkitsune_(character)