Rule 34 Dev - 4_fingers 4_toes abs anatomically_correct anatomically_correct_genitalia anatomically_correct_penis animal_genitalia animal_penis anthro balls barefoot biceps big_penis biped blush bodily_fluids canine_genitalia canine_penis claws erection feet fingers front_view genital_fluids genitals knot looking_at_viewer male muscular muscular_anthro muscular_male nipples nude pecs penis precum presenting presenting_penis serratus simple_background smile snout solo standing toe_claws toes vein veiny_penis white_background zupat canid canine canis mammal wolf 2017 3:4 black_and_white digital_media_(artwork) full-length_portrait hi_res monochrome portrait signature spot_color|5960953915