I am confused. I was thinking about switching vets.. I have a 1 year old yorkiepin, and I just got a new puppy, he's only 8 weeks old. Our current vet only does 2 distempers.. One at 8 weeks, and the booster.. I called to another local vet and they do 4 distempers! One every 4 weeks until 20 weeks.. I was wondering how necessary this is, how many others have had a vet to do this? I am so paranoid about parvo, and I am either skeptical of this new vet, or dissapointed in my old vet, whichever hold true for what should be done lol.. The new vet is ALOT pricier too..