rule 34 anatomically correct anatomically correct genitalia anatomically correct penis animal genitalia animal penis anus ass ass up balls barn big balls big penis black border blue hooves blue mane blue sky blue tail border bucket chicken coop day detailed background digital media artwork dock equid equine equine penis erection farm felris character fence feral genitals glistening hooves hair hi res hooves leg markings looking at viewer looking back male mammal mane markings medial ring outside penis presenting presenting anus presenting hindquarters psy101 puffy anus sky socks marking solo tail aside tree yellow eyes 4039307