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2d_animation anal anal_penetration animated animated_gif anthro armpit_hair balls belly belly_riding biceps biped body_hair bound bulge burly canid canine clothed clothing dominant dugan_(metalfoxt)duo erection erection_under_clothing eyes_closed eyewear fangs fox frame_by_frame from_front_position genitals glasses hairy hi_res hyena inside_clothing larger_dom larger_male loop male male/male male_penetrated male_penetrating male_penetrating_male mammal manly metalfoxt monochrome musclegut muscular muscular_male pecs penetration penile penile_penetration penis_in_ass sex short_playtime simple_background size_difference sketch smaller_male smaller_penetrated teeth thrusting topwear unfinished wrestling_singlet