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anthro anthro_penetrating anthro_penetrating_human bdsm big_muscles biped black_and_white bodily_fluids bondage bound chain collar cum cum_in_mouth cum_inside cumshot dominant dominant_anthro dominant_male duo ejaculation equid equine erection fellatio genital_fluids genitals horse huge_muscles human human_on_anthro human_penetrated interspecies jeri_kleinlowe kneeling larger_anthro larger_male licking male male/male male_penetrated male_penetrating male_penetrating_male mammal monochrome muscular muscular_male nude oral orgasm penetration penile penis penis_lick questionable_consent sex simple_background size_difference smaller_human smaller_male standing submissive submissive_human submissive_male tail tongue tongue_out white_background