Rule 34 Dev - 2023 abs anthro balls biceps black_nose canid canine canis chunie digital_media_(artwork) erection foreskin fur genitals grey_body grey_fur hi_res humanoid_genitalia humanoid_penis looking_at_viewer male male_only mammal muscular muscular_anthro muscular_male nipples nude partially_retracted_foreskin pecs penis smile solo wolf|8670131672