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1:1 animal_genitalia animal_penis anthro balls bed biped bodily_fluids brown_hair canid canine canine_genitalia canine_penis canis countershading cum detailed_background dipstick_tail erection furniture genital_fluids genitals hair hi_res joe_(physicswolf)knot male mammal markings multicolored_tail navel nude penis precum solo spread_legs spreading tail tail_markings tonosan wolf