The American Kennel Club provides an online database that allows site visitors to find shih tzu puppies for sale in various locations. There are reputable shih tzu breeders all across the United States.
When choosing a puppy, it's important to buy only from reputable breeders. Responsible puppy breeders provide papers describing the lineage of any given dog. They keep accurate and detailed records of the dog's medical history, vaccinations and spay or neuter records.
Puppy mills, on the other hand, often breed dogs in an irresponsible manner. They mass-produce dogs in order to sell them to pet stores. This attitude toward breeding leads to an overproduction of puppies that may not be able to find homes. It also means that puppies may be of inferior health.
Shih tzus should be purchased from a breeder who can guarantee that the puppy is healthy and free of the most common health problems in the breed. Patellar luxation is one of these common illnesses; it is a condition where the dog's kneecap habitually slides out of place.
If puppies are not available right away, most breeders are happy to add prospective buyers to a wait list in order to guarantee them the next available shih tzu puppies.