The proper dog vaccinations and parasite control depends a lot on the area you live in with your pet. Areas with very different seasons have different requirements than areas with very warm weather year round, for example. Therefore, if you are planning a vacation with your dog or moving to an area with a very different climate than the one you have lived before, it can be a wise decision to ask your vet, if any changes to your dog’s current vaccination and parasite control schedule are advisable.
In many countries several vaccinations are required by law. For example, all states of the U.S. have their own regulations due to rabies vaccination for dogs.