How to Buy Vaccinated Sheep

You want to check that the sheep has some weight on it, right? And you want to check its teeth, of course. You don't want to check the vaccine status as well. I've only really come across this in the United States recently. Some people were rage posting on the place I go to buy chickens because it didn't want to buy vaccinated chickens,. which is just fucking the animal egg. Oh, wow. It's so much learning.