Rule 34 Dev - abs anthro balls biceps canid canine canis casual_erection casual_nudity deltoids domestic_dog erection fur genitals habuwolfdog hi_res humanoid_genitalia humanoid_hands humanoid_penis looking_at_viewer male male_only mammal manly muscular muscular_anthro muscular_male navel nipples nude penis simple_background solo solo_focus tail|9232004144