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2012 anakuro anthro anus backsack ball_gag balls bdsm blush bondage bound butt canid canine collar collar_only cropped digital_media_(artwork)dungeon fox gag gagged genitals green_eyes jasonwerefox leash leather looking_at_viewer looking_back male mammal nude perineum presenting raised_tail red_fox solo submissive submissive_male tail true_fox whiskers