Rule 34 Dev - 2018 4_toes 5_fingers abs animal_genitalia animal_penis anthro areola balls big_penis biped blue_eyes brown_hair canid canine canine_genitalia canine_penis canis chest_tuft claws colored erection facial_hair fangs feet fingers fist flexing flexing_bicep fluffy fluffy_tail front_view genitals grey_background hair hi_res humanoid_hands julicat knot long_tail looking_at_viewer male male_only mammal monotone_background muscular muscular_anthro muscular_male navel nipples nude open_mouth open_smile pecs penis pubes short_hair sideburns signature simple_background smile solo standing tail teeth toes tongue tuft wolf xavier_(myronek)|11998661256