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2d_animation abdominal_bulge against_surface against_wall animated animated_gif anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro arm_support balls big_balls big_penis biped canid canine canis dangling_legs detailed_background digital_media_(artwork)domestic_dog duo eyes_closed femboy forward_arm_support fur genitals green_penis hair huge_penis hyper hyper_genitalia hyper_penis larger_male male male/male male_penetrated male_penetrating male_penetrating_male mammal motion_tweening multicolored_body nefitail nude nyxqt outside penetration penis pupils sam_(nefitail)sex short_playtime side_view size_difference smaller_male smile tail tail_grab tail_pull thick_thighs white_body white_fur