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abs accessory anthro assassinfenrir balls bdsm black_nose bondage bound canid canine chest_tuft digital_media_(artwork)fox fur furgonomics genitals green_eyes grey_body grey_fur hi_res jewelry lifewonders live_a_hero looking_at_viewer male mammal mask multicolored_body multicolored_fur navel nipples pecs penis ring shaded signature simple_background solo tail tail_accessory tail_jewelry tail_ring tongue tongue_out tuft two_tone_body two_tone_fur vulpecula watermark