Conn. Gen. Stat. § 22-339a
Town clerks may deputize agents for the issuance of licenses. Licensing of dogs acquired from dog pounds. Fees. Rabies certificate.
(b) Any person acquiring an unlicensed dog from a dog pound shall be issued a temporary license by the town clerk, or his agent deputized pursuant to subsection (a) of this section, which shall expire thirty days after the issuance thereof. Prior to the expiration of a temporary license, the person holding the license shall apply for a license for the remainder of the license year, pay the appropriate license fee specified in section 22-338 , and submit a certificate signed by a veterinarian, or a copy thereof, stating (1) that the dog has been vaccinated against rabies, (2) the date of the vaccination and (3) the duration of the immunity provided by the vaccine. No license shall be issued unless the certificate indicates that the immunity provided by the vaccine is effective at the time of licensing.