Rule 34 Dev - anthro balls biceps black_nose body_hair erection fangs flexing foreskin fur genitals grey_body grey_fur happy_trail humanoid_genitalia humanoid_penis looking_at_viewer male muscular muscular_anthro muscular_male nude penis pubes purple_eyes smile smirk solo standing tail teeth vein veiny_penis lion21 alex_nightmurr canid canine canis mammal wolf hi_res sketch story story_in_description|17798228945