A. Dogs must be vaccinated against rabies within 30 days after the dog reaches 4 months of age and revaccinated within one year. Adult dogs must be vaccinated every three years. WI Stats 95.21(2)
B. If the dog is more than 5 months of age on January 1st of any year, a license is required. Proof of rabies vaccination must be provided to receive the license. WI Stats 164.05(1) and 174.07(1)(a) and (b).