Rule 34 Dev - anal anal_penetration animal_genitalia animal_penis ball_gag ball_stretching balls bdsm black_balls black_body black_fur black_mane black_tail bondage bound breath brown_eyes dildo dildo_in_ass dildo_insertion equine_genitalia equine_penis erection feathering feral flared_penis fur gag gagged genitals hooves horseshoe male male_feral mane object_in_ass penetration penis penis_bondage quadruped red_gag sex_toy sex_toy_in_ass sex_toy_insertion simple_background solo tail tail_tied underhoof unguligrade vein veiny_penis rufciu draft_horse equid equine friesian horse mammal 2019 dated signature|22857003435