Rule 34 Dev - 2017 anal anal_sex anatomically_correct anatomically_correct_penis animal_genitalia animal_penis ass black_fur black_hooves black_mane black_tail cum cum_in_ass cum_inside cum_on_ass dead_tree detailed_background draft_horse dripping drooling duo ears_back equine equine_penis erection feathering feral feral_on_feral friesian from_behind_position fur hooves horse horsecock male male_penetrating mammal mane mounting open_mouth outdoors penetration penis pink_penis precum quadruped saliva sex side_view signature sky snout t-tiffa teeth tree white_fur white_mane white_tail yaoi|2639413176