http://www.hsus.org/pets/issues_affecting_our_pets/get_the_facts_on_puppy_mills/index.htmlPuppy mills are breeding facilities that produce purebred puppies in large numbers. The puppies are sold either directly to the public via the Internet, newspaper ads, at the mill itself, or are sold to brokers and pet shops across the country. Puppy mills have long concerned The Humane Society of the United States.
The documented problems of puppy mills include overbreeding, inbreeding, minimal veterinary care, poor quality of food and shelter, lack of socialization with humans, overcrowded cages, and the killing of unwanted animals. To the unwitting consumer, this situation frequently means buying a puppy facing an array of immediate veterinary problems or harboring genetically borne diseases that do not appear until years later. In 1994, Time magazine estimated that as many as 25% of purebred dogs were afflicted with serious genetic problems.
Sadly, some dogs are forced to live in puppy mills for their entire lives. They are kept there for one reason only: to produce more puppies. Repeatedly bred, many of these "brood bitches" are killed once their reproductive capacity wanes.
Thousands of these breeding operations currently exist in the United States, many of them despite repeated violations of the federal Animal Welfare Act (AWA). The United States Department of Agriculture (USDA) is charged with enforcing the AWA; however, with 96 inspectors nationwide who oversee not only the thousands of puppy mills, but also zoos, circuses, laboratories, and animals transported via commercial airlines, they are an agency stretched thin.
The HSUS, along with other animal-protection groups, has successfully lobbied for increased funding for AWA enforcement. Although all 50 states have anti-cruelty laws that should prevent neglect and mistreatment of dogs in puppy mills, such laws are seldom enforced.
The Pet Store Link
The HSUS strongly opposes the sale, through pet shops and similar outlets, of puppies and dogs from mass-breeding establishments. Puppy-mill dogs are the "inventory" of these retail operations. Statistics from the Pet Industry Joint Advisory Council (PIJAC) indicate that approximately 3,500 to 3,700 of the 11,500 to 12,000 U.S. pet stores sell cats and dogs. PIJAC also estimates that pet stores sell 300,000 to 400,000 puppies every year. The HSUS estimates the number to be 500,000.