amy_rose anthro big_dom_small_sub breasts butt dominant duo erection eulipotyphlan female female_penetrated from_behind_position genitals hedgehog larger_male male male/female male_penetrating male_penetrating_female mammal penetration penis rockthebull sega sex size_difference smaller_female smaller_penetrated sonic_the_hedgehog sonic_the_hedgehog_(series) sonic_the_werehog sonic_unleashed were wereeulipotyphlan werehog