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1:1 anthro anus ass_up backsack balls big_butt biped butt digital_media_(artwork)domestic_cat domestic_ferret felid feline felis femboy genitals hi_res male male_anthro mammal moonshadows mustelid musteline nude nude_anthro nude_male penis penis_tuck pinup pose presenting presenting_hindquarters solo spread_butt spreading tail tail_anus thick_thighs true_musteline weasel wide_hips