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anthro areola assertive_female bat big_breasts breasts dominant dominant_female duo echidna female female_anthro female_on_top female_penetrated hi_res interspecies knuckles_the_echidna luluu male male/female male_anthro male_penetrating male_penetrating_female mammal monotreme on_top penetration rouge_the_bat sega sex smile smirk sonic_the_hedgehog_(series)submissive submissive_male