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2012 abby_(rukifox)all_fours ambiguous_knotting ambiguous_penetration anatomically_correct animal_genitalia animal_penis ass_up bite blush bodily_fluids breath canid canine canine_genitalia canine_penis clenched_teeth close-up comic cum cum_in_vagina cum_inside dipstick_tail doggystyle duo erection female female_penetrated feral feral_on_feral forced fox from_behind_position gasp genital_fluids genitals heart_symbol hi_res internal knot knotting lying male male/female male_penetrating male_penetrating_female mammal markings nude on_front orgasm penetration penis quadruped red_fox rukifox sex surprised tail tail_markings teeth tongue true_fox yellow_eyes