animal_genitalia animal_pussy anus artificial_insemination bdsm bondage bound chain chained dildo dildo_insertion dock_(anatomy) equine_genitalia equine_pussy female feral futuristic gaping gaping_pussy genitals hooves inside laboratory legs_tied lying machine_fucking muzzle_(object) muzzled on_front penetration pipe predicament_bondage pussy raised_tail science_fiction sex_toy sex_toy_insertion solo spread_legs spreading submissive submissive_female submissive_feral underhoof vaginal vaginal_penetration sharpy equid equine horse mammal absurd_res hi_res
How and why she got into this situation is left to your imagination.