Rule 34 Dev - 2017 2boys animal_genitalia animal_penis anthro black_fur canine chest_tuft crossed_arms duo erection flaccid foreskin fur furry gesture grey_fur hair hand_gesture hi_res horn humanoid_penis knot looking_at_viewer male male_only mammal naughtygryph nude open_mouth penis photo piercing purple_fur selfie simple_background smile standing testicles text tuft urethra_piercing v watermark white_fur wolf|3047940848