§ 107. Application. 1. This article shall apply to all areas of the state except any city having a population of over two million.

2. In the event that any dog owned by a resident of any city having a population of over two million or by a non-resident of this state is harbored within this state outside of any such city, the licensing municipality in which such animal is harbored may exempt such dog from the identification and licensing provisions of this article for a period of thirty days provided such dog is licensed pursuant to the provisions of law of the area of residence.

3. This article shall not apply to any dog confined to the premises of any public or private hospital devoted solely to the treatment of sick animals, or confined for the purposes of research to the premises of any college or other educational or research institution.

4. This article shall not apply to any dog confined to the premises of any person, firm or corporation engaged in the business of breeding or raising dogs for profit and licensed as a class A dealer under the Federal Laboratory Animal Welfare Act.

5. Nothing contained in this article shall prevent a municipality from adopting its own program for the control of dangerous dogs; provided, however, that no such program shall be less stringent than this article, and no such program shall regulate such dogs in a manner that is specific as to breed. Notwithstanding the provisions of subdivision one of this section, this subdivision and sections one hundred twenty-three, one hundred twenty-three-a and one hundred twenty-three-b of this article shall apply to all municipalities including cities of two million or more.

6. Nothing contained in this article shall be construed to prohibit a county from administering a dog licensing program for the municipalities within its jurisdiction.