Yes, Uni has double fangs on the right side. Her buddy Missy has both sides. When you get Bailey neutered, have the vet extract them. Trust me, it is a pain in the butt to keep that area clean. Floss it if you can. Get him used to teethbrushing now. Yorkies are notorious for having bad teeth. If the teeth are bad enough, they can get sick too. See how Uni's teeth are yucky inbetween there?
btw. nice white teeth! Keep them like that!