[doortego]

I think the reason for the multiple vaccinations is that because up until 4 months of age they retain some immunities from the mother's milk/colostrum. If they have natural immunity from that, the vaccination will not fully take. All of the vets I know require their last shots to be after 4 months of age. Also it is my understanding that the bordatello shots actually only last 6 months. At least that is what I was told when they revaccinated mine prior to her spaying. I would not be offended that they wanted to play with my dog. However, having said that, I did change vets when they would take mine to the back for shots and I could not see what they were doing. I was very cautious about just getting one shot at a time and waiting a couple of weeks between them. They did not seem to appreciate my caution.