Rule 34 Dev - abs animal_genitalia animal_penis anthro anus balls biped butt canine_genitalia canine_penis erection fangs fluffy fur genitals hair horn knot long_ears lying male markings on_ground penis red_eyes shadow solo tattoo teeth tongue tongue_out white_body white_fur naruka undertale undertale_(series) asriel_dreemurr_(god_form) boss_monster_(undertale) bovid caprine demon mammal 16:9 2018 hi_res widescreen|7747163830