Rule 34 Dev - 1boy 2013 abs anthro anus ass athletic autofellatio backsack balls biceps big_penis black_nose canine chumbasket claws erection eyebrows fur hi_res humanoid_penis looking_at_viewer male male_only mammal masturbation muscular nipples nude oral oral_penetration pecs penetration penile_masturbation penis presenting presenting_hindquarters sitting smile solo spread_legs spreading tongue tongue_out vein veiny_penis whiskers wolf yellow_eyes|2461973560