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1:1 ambiguous_gender ambiguous_penetration animal_genitalia animal_penis arthropod bestiality domestic_silk_moth duo feral feral_penetrating feral_penetrating_human genitals heart_symbol human human_on_feral human_penetrated humanoid insect insectophilia internal interspecies lepidopteran male male/ambiguous mammal monochrome moth peachykeen penetration penis sex silk_(peachykeen)