Dog and cat license receipts shall be carefully preserved by the licensees and exhibited promptly on request for inspection by any animal control officer or other officer. Dog license tags shall be securely fastened to a substantial collar by the owner or custodian and worn by such dog. It shall be unlawful for the owner to permit any licensed dog four months old or older to run or roam at large at any time without a license tag. The owner of the dog may remove the collar and license tag required by this section when: (i) the dog is engaged in lawful hunting; (ii) the dog is competing in a dog show; (iii) the dog has a skin condition that would be exacerbated by the wearing of a collar; (iv) the dog is confined; or (v) the dog is under the immediate control of its owner.