They would also have to provide consumers with basic information about the dogs, including a complete medical history.
"Puppies are companion animals that should be a welcome addition to any family. Breeders that recognize that fact will continue to operate successfully in Illinois. Puppies are not cash crop," said Democratic State Rep. John Fritchey of Chicago.
The bill has the support of the Humane Society and the American Society for the prevention of cruelty to animals.