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2022 animal_genitalia animal_penis anthro balls big_balls big_penis blue_eyes brown_body equid equine equine_genitalia equine_penis erection genitals grey_background hi_res horse huge_balls huge_penis hyper hyper_balls hyper_genitalia hyper_penis light lighting male mammal open_mouth penis shaded simple_background solo zander_(zhanbow)zhanbow