Rule 34 Dev - 2013 all_fours anal anal_sex anthro anthro_on_feral blackfrost canine closed_eyes doggy_style feral fox from_behind fur furry furry_only gay german_shepherd group group_sex interspecies knotting male mammal nude open_mouth oral oral_sex penetration plain_background sex threesome tongue tongue_out white_background wolf zoophilia|1760561768