Remember, even if your pet has already been vaccinated, they may still need to be seen for further vaccinations. (stoneridgeanimalhospital.com)
Once a puppy is adopted the new owner takes over the cost of further vaccinations. (hart90.org)
Ideally, puppies should have had their last vaccination after 16 weeks of age then should be tested to see if further vaccination is necessary. (dogsnaturallymagazine.com)