There are so many changes going on with regards to Vaccines, it's hard to keep up. A puppy is born with a natural immunity from the Dam that lasts only for a short period, 6-8 weeks average, but this also depends on the Titer levels and condition of the Dam during Gestation. Another factor is the amount of Collistrum the puppy received right after birth. This is the very first milk the Dam produces, and if it was a weak puppy that didn't receive the very important first milk, the immunity level could very well be lower than his sibling's.
Yorkie pups usually start their Vaccine series at about 8 weeks, and are given boosters (repeated shots) every 2-3 weeks. This is done until they have reached the age of 4 months, so if you didn't purchase your Yorkie Pup until at least 3 months old, as you should, you'll only need to re-vaccinate once or twice. Then re-vaccinate to your Veterinarian's beliefs.
You must talk with your Vet with any concerns you have regarding the well being of your Yorkie.
This Yorkie Growth Chart is just a guess of what your yorkie baby could weigh as an adult. It really depens on you yorkies lineage. We CAN NOT guarentee size.
Why do we vaccinate? Click here to find out...