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anal anthro anthro_on_anthro blush bodily_fluids butt canid canine canis crouching dialogue domestic_dog drooling duo english_text eyes_closed heart_symbol hi_res larger_male larger_on_top larger_rimmed leg_grab male male/male mammal monochrome musk musky_anus on_top oral redrusker rimming saliva saliva_string sex simple_background size_difference smaller_male standing standing_sex sweat sweaty_butt text tongue tongue_out