Our vet believes that pets are over vaccinated. He has been willing to work with us on this. Since my kitties are allowed outside and have on rare occasion come in contact with our neighbor's cat, I have them vaccinated for their own protection. The rabies shot is required by law here also. Halo's immune system will not tolerate the shot and she we almost lost her twice when her fever spiked and she went into convusions after getting the shot. She will not be getting another one. We're 100% certain she'll get sick if she gets the shot and we're almost 100% sure she'll never come in contact with a rabid animal.