Rule 34 Dev - anal anal_sex anthro balls battle_angel blonde blonde_hair blush canine cum echidna fur human knuckles_the_echidna male male_only mammal monotreme multiple_males open_mouth penis red_body red_fur red_hair sega sonic_(series) sonic_3 sonic_the_hedgehog_(series) sonic_the_hedgehog_3 steam sweat tails yaoi yellow_body yellow_fur|2048825528