This chapter does not apply to a place or establishment which is operated under the immediate supervision of a duly licensed veterinarian as a hospital where animals are harbored, boarded and cared for incidental to the treatment, prevention, or alleviation of disease processes during the routine practice of the profession of veterinary medicine except that, if animals are accepted by that place, establishment or hospital for the primary purpose of boarding in return for a fee, the place, establishment or hospital is subject to the kennel license provisions of this chapter and the regulations relating to the license which may be promulgated by the director. This chapter shall not apply to any dealer or research facility during the period that the dealer or research facility is in the possession of a valid license or registration granted by the secretary of agriculture pursuant to 7 U.S.C. § 2131 et seq. This chapter shall not apply to breeders, nor to hobby breeders.