2014 animal_genitalia animal_penis anthro balls blue_eyes canid canine canine_genitalia canine_penis canis detailed_background disembodied_penis dog_tags duo erection forest fur genitals grass grey_body grey_fur kneeling knot looking_at_viewer male male/male mammal nature outside penis plant sex_toy smile solo_focus tongue tongue_out tree wolf yaoi-no-mikan