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1:1 2012 against_fence against_surface anthro arched_back bent_over big_breasts breasts butt butt_grab domestic_ferret duo eyes_closed female fence from_behind_position greyscale hand_on_butt hanging_breasts hi_res huge_breasts male male/female mammal monochrome mustelid musteline nateday nipples nude on_fence raised_tail sex sketch tail third-party_edit true_musteline weasel