Rule 34 Dev - 16:9 3d_(artwork) absurd_res anthro ass balls breasts clothed clothing digital_media_(artwork) duo echidna erection eulipotyphlan fur genitals hedgehog hi_res knuckles_the_echidna loafsfm male male/male mammal monotreme nipples nude penis sega simple_background smile sonic_(series) sonic_the_hedgehog source_filmmaker widescreen|6782381568