As used in the Pet Sterilization Act:
A. "animal" means a cat or dog;
B. "animal shelter" means any animal facility operated privately or by or for a municipality or county, in which stray, lost or unwanted animals are kept and released for adoption;
C. "sterilization" means rendering an animal unable to reproduce, either by the spaying of a female animal or by the neutering of a male animal; and
D. "sterilization deposit" means that portion of the adoption fee charged by the animal shelter when a person adopts an unsterilized animal; the "sterilization deposit" is refunded when the animal is sterilized.