Supporting character in the Lord of the Rings trilogy. Gandalf is a wizard who dies in the first book but comes back in The 2 Towers. He helps Frodo, a hobbit, bring the one ring to Mordor, where it can be destroyed to save Middle Earth. Gandalf is to Mage as Frodo is to Hobbit.
Puppies vaccinated for distemper once at 12 to 16 weeks of age with a high titer vaccine have a virtually 100% chance of being protected. And that protection is most likely for life.
Even if he's a 15 year old house poodle. Necessary depends on your lifestyle. A puppy should get three distemper shots, and then you can forget about it if your dog is pretty much never leaves the house except to potty in your fenced yard and never goes to dog parks. Dogs catch it from other dogs, etc.