This chapter does not apply to:
(1) a dog or cat that is claimed from a releasing agency by a person who already owns the animal;
(2) a releasing agency located in a municipality that has in effect an ordinance providing standards for dog and cat sterilization that exceed the requirements provided by this chapter;
(3) an institution of higher education that purchases or otherwise procures a dog or cat for the purpose of biomedical research, testing, or teaching; or
(4) a releasing agency located in:
(A) a county with a population of 20,000 or less; or
(B) a municipality with a population of 10,000 or less.