We were told to dock tails on day 4, I stressed (even ran a poll here.) I do not find my vet very helpful, but they said worm on 2,4,6 weeks, bring back at 6 weeks for first shots. But for 5 pups, they give a great discount. It may be cheaper for 5 than for 1??? I sure would be interested to find how you would find a really good yorkie vet. I constantly second guess mine. We have several in the area, and I can't say I like any of them much. Of course, these guys do everything from small animals to horses, not much of a specialty.