Rule 34 Dev - 2boys abs anthro biceps blue_fur bodybuilder cutterfl doggy_style echidna female fur furry group_sex hedgehog knuckles_the_echidna male mammal monotreme muscle muscles nippleless_male oral_sex pecs rouge_the_bat shadow_the_hedgehog sonic_(series) sonic_the_hedgehog straight vaginal_penetration|444437488