Rule 34 Dev - 2014 4_toes 5_fingers anal anal_sex animal_genitalia animal_penis anthro armpits ball_lick balls biceps big_penis black_fur black_nose brother brown_hair canine canine_penis chest_tuft closed_eyes collaboration collie double_penetration erection eyebrows fangs father father_and_son fellatio fur furry green_eyes grin group group_sex high_five highres hybrid incest indoors knot licking lying male mammal max_kiana muscular nipples nude on_back on_front on_top open_mouth oral oral_penetration pecs penetration penis red_penis rough_collie ryusei_iouko sex shadow_kiana sheath siblings side_view simple_background smile sofa son spitroast standing straddling teeth toes tongue tongue_out train_position tuft twins white_fur white_hair wolf wolfblade yamato_iouko yamatoiouko yaoi young|2492670320