I think some dogs have bad reactions to shots because not every dog can handle them since not every dog is the same.

I was just reading a thick book about puppies I bought. It has a section on buying from a breeder which includes a list of questions to ask.

I warn you most people are looking for a dog with their shots, pedigree parents, and health certifacets.

"Most breeders should only be too happy to show you show titles or health certifacits. If they are wary about showing you or say "We'll show you when you pick up the puppy" be warned!"

~Ravhel