Rule 34 Dev - 2019 ambiguous_domination ambiguous_gender ambiguous_penetrated american_paint_horse anatomically_correct anatomically_correct_genitalia anatomically_correct_penis animal_genitalia animal_penis anus backsack ball ball_fondling balls bodily_fluids brother brother_and_sister deep_throat detailed_background digital_drawing_(artwork) digital_media_(artwork) domination dreamworks duo english_text equid equine equine_penis erection fan_character fellatio feral feral_on_feral feral_penetrated feral_penetrating feral_penetrating_feral fondling genitals haflinger hooves horse incest licking looking_pleasured male male/ambiguous male_penetrating male_penetrating_ambiguous mammal open_mouth oral oral_penetration penetration penile penis rufciu saliva sex shaded sibling sister spirit:_stallion_of_the_cimarron spread_legs spreading sucking text tongue tongue_out|4921081496