rule 34 anal anal sex anus ball tuft black nose brown body brown countershading canid canine canis claws out closed eyes countershading dipstick tail domestic duo face mask feral genitals green eyes green sclera grey body hand on stomach head tuft hi res kinktober knot hanging looking at another looking back looking back at another male malemale mammal markings nude open mouth owlkin artist pawpads penetration penile penile penetration penis penis in ass penis size difference pink pawpads shiba inu simple background size difference spitz spots spotted body stomach bulge tail tail markings tail motion tailwag tongue tongue out tuft white inner ear wolf 8819220