Here in North Carolina, we have a choice of a one-year or three-year rabies certificate (and the associated collar tag) for our dogs. The one-year and the three-year are the same vaccine product. (The first rabies vaccine a puppy gets is always only good for one year.)
After the initial 12- month booster, how often your dog gets rabies vaccines is controlled by local law. Every three years is generally considered adequate in most communities and by American Animal Hospital Association and the American Veterinary Medicine Association.
When we have a rabies clinic in Macon County (or when you go to your vet) and they have only the one-year certificate (and NOT the three-year) available, the purchasers are getting short-changed and the pet receives additional unnecessary vaccinations. I will leave it to the reader to question the possible motive for this.
Tom Hill — Franklin, N.C.