FURVERT!

all_fours anal anal_penetration anatomically_correct anatomically_correct_genitalia anatomically_correct_penis animal_genitalia animal_penis balls big_penis black_balls clydesdale day digital_media_(artwork)doggystyle draft_horse duo equid equine equine_genitalia equine_penis erection eyes_closed feral feral_on_feral feral_penetrated feral_penetrating feral_penetrating_feral fetlocks from_behind_position genitals grass hooves horse intraspecies looking_back male male/male male_penetrated male_penetrating male_penetrating_male mammal mane medial_ring mounting nude open_mouth outside penetration penile penile_penetration penis pink_balls pink_penis plant quadruped sex sheath simple_background storm_engineer