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anthro bottomwear bottomwear_down canid canine claws clothed clothing erection fangs finger_claws genitals hair hi_res humanoid_genitalia humanoid_penis lying male male_anthro mammal masturbation monochrome mouth_closed navel on_back pants pants_down partially_clothed pawpads penile penile_masturbation penis seraphictiger short_hair simple_background solo teeth tongue tongue_out