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2006 animal_genitalia anthro balls biceps biped canid canine canis collar collar_only english_text eyebrows fluffy fluffy_tail fully_sheathed fur genitals hair humanoid_hands looking_at_viewer male mammal monochrome muscular muscular_anthro muscular_male navel nipples nude pecs penis richard_foley sheath signature simple_background sitting sketch smile solo tail text white_background wolf