Dog Licensing in 2023: The State of Connecticut requires that all dogs six months of age or older be licensed annually on or before June 30 in the town clerk’s office in the town where the dog is owned or kept. Licenses will be available on June 1st. A current rabies vaccination certificate must be submitted or be on file. Neutered or spayed dogs cost $8.00 and male or female dogs cost $19.00. For a neutered or spayed dog being licensed for the first time, a certificate from a licensed veterinarian must be presented. Penalties apply for late registration. There will be three options for obtaining your dog’s license: You may register in person, by mail (enclose a SASE for return of tag and license) OR by using the online license renewal system. The online option is only for dogs that were licensed last year. The Cornwall website cornwallct.org will show the link on June 1st. New dogs and others that failed to renew their licenses last year will need to use the mail option or register in person.