How long does a dog's rabies shot last?

Quick Answer. The first rabies vaccination given to a dog at around four to six months of age lasts for one year, at which time the dog requires a booster rabies vaccination. The second round of rabies vaccinations and all subsequent vaccinations last for three years. read more

According to the American Humane Association, the first and second rabies shots are always one-year shots. Pet owners can choose to switch to a three-year rabies vaccination or continue with a yearly vaccination after the first two shots, provided the three-year shot is an available option. read more

Dogs and cats are first vaccinated for rabies between 4 and 6 months of age. They need a booster one year from that date. They are then vaccinated every three years, although some states still require annual rabies vaccinations for dogs and/or cats. read more