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2017 3:5 abs abstract_background anthro balls biceps big_penis biped black_hair body_hair bottomwear bottomwear_down brown_body brown_skin canid canine canis castbound chest_hair clothed clothing countershading domestic_dog erection flexing foreskin genitals hair hi_res humanoid_genitalia humanoid_penis looking_at_viewer male mammal muscular muscular_anthro muscular_male nipples obliques open_clothing open_shirt open_topwear pants pants_down partially_clothed pecs penis pubes retracted_foreskin russell_(castbound)shirt smile smirk solo standing topwear triceps undressing vein veiny_penis