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animal_genitalia animal_penis anthro anus balls bodily_fluids claws clenched_teeth collar digital_media_(artwork)dragon equine_genitalia equine_penis eyes_closed fur gemkin genitals hair hand_on_penis hi_res hybrid lying male masturbation medial_ring monochrome mythological_creature mythological_scalie mythology on_back penis scalie simple_background solo spread_legs spreading sweat tail teeth toe_claws