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2012 abs animal_genitalia animal_penis anthro balls biceps big_muscles big_penis biped bonner_(character)brown_body brown_fur butt canid canine canine_genitalia canine_penis canis cropped_ears dobermann domestic_dog english_text erection flaccid fur genitals knot looking_at_viewer male mammal model_sheet muscular muscular_anthro muscular_male nexus nipples nude pecs penis pinscher pose sheath solo standing text vein