Puppies and kittens should get their first vaccinations around six weeks of age, and every three weeks thereafter until they are at least 16 weeks old. After that vaccines are given every one to three years depending on the type of vaccine and your pets’ lifestyle and environment. For those concerned about potential effects of vaccinations we offer vaccine titers; blood tests which tell us how much immunity your pet has against core diseases and whether he needs to be vaccinated at the present time.