All dogs and cats owned and/or kept within the city shall be licensed, with the following exceptions:
   (A)   Dogs and cats under the age of six months;
   (B)   Dogs and cats whose owners are temporarily in the city for a period of time not exceeding 30 days; and/or
   (C)   Dogs and cats that are brought into the city for the purpose of performance, an animal show, circus or similar lawful appearance.
(`87 Code, § 508.05)