Yes i have knowledge in pets and vaccines. Puppy shots, one yr booster then titer after that. IF you live in a place that says Rabies is fully required and titers are not accepted..then find a vet that offers 3 yr and ask for the thimerosal free. many vets may not carry the Thimerosal free. Call around. if a boarding facility wants any vaccines beside Rabies..find another boarding place. ALL VET CLINICS will want them vaccinated out the wazoo. and yes vaccines are damaging..especially the Lepto and Distemper.