anal anal_penetration animal_genitalia balls black_fur black_hair black_nipples black_penis blue_fur blush breasts butt cowgirl_position dickgirl duo equine erection eyes_closed fur grass grey_fur grey_hair hair horse horsecock intersex long_hair lying male male_on_dickgirl mammal multi_cock nightfaux nipple_piercing nipples nude on_back on_top open_mouth outside penetration penis piercing red_eyes riding sex short_hair sky spots straddling thighs white_fur