4:5alpha_channelanthrobandagebig_buttbuttcanastuscrooked_taildisembodied_penisdreadlocksduoechidnaerectionfemalefemale_penetratedgenitalshairheart_symbolmalemale/femalemale_penetratingmale_penetrating_femalemammalmonotremenudeorange_bodypenetrationpenilepenile_penetrationpenispenis_in_vaginarear_viewsegasexsimple_backgroundsonic_adventuresonic_the_hedgehog_(series)tailtikal_the_echidnatransparent_backgroundvaginalvaginal_penetration