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anthro balls bdsm bondage bound canid canine collar ears_back erection fangs genitals hair hands_behind_back hands_tied hi_res humanoid_genitalia humanoid_penis male male_anthro mammal monochrome multicolored_hair narrowed_eyes nipples nude open_mouth penis pivoted_ears restraints rope rope_bondage seraphictiger sitting solo spread_legs spreading teeth tongue tongue_out two_tone_hair