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16:10 abs anthro anus biped black_hair black_nose blue_eyes butt canid canine canis fur genitals grey_body grey_fur hair hi_res humanoid_genitalia humanoid_penis inner_ear_fluff johan_(wrinklynewt)lying male mammal markings muscular muscular_anthro muscular_male on_back penis pillow simple_background solo spreading tattoo theserg tuft widescreen wolf