Beginning in January 2019, California pet stores will only be able to sell puppies, rabbits, and kittens they obtain from animal shelters and rescue centers. If they don't, they'll face a $500 fine. California residents will still have the option to purchase their pets from individual breeders, according to The New York Times. Though California is the first state to pass this kind of legislation, it is following a precedent set by many of its cities and counties, which have enacted similar regulations. The law received support from animal welfare activists, who have long been concerned about the conditions animals face before being sold to pet stores. A fact sheet written by the California legislature claimed that in many cases puppy mills house animals in overcrowded and unsanitary conditions without adequate food, water, socialization or veterinary care.