Rule 34 Dev - anthro anthro_on_anthro ass blush butt closed_eyes clothed clothing cuddling cute echidna hedgehog hi_res knuckles_the_echidna legwear lying male male_only mammal monotreme nude on_side open_mouth quills r18 sharp_teeth smile socks sonic_(series) sonic_the_hedgehog sonknux teeth tongue video_games yaoi|3244558016