Rule 34 Dev - 1boy 2014 animal_genitalia animal_only black_fur brown_eyes draft_horse equine feral fetlocks front_view full-length_portrait full_length fur half-erect hidalgo horse horsecock looking_at_viewer looking_away male male_only mammal model_sheet muscles penis portrait rufciu running shire side_view solo standing thick_penis vein white_fur|1927356208