Fight Cruelty

Puppy Mill FAQ

Puppy mill dog in isolation after being rescued in 2011.

What Is a Puppy Mill?

A puppy mill is a large-scale commercial dog breeding operation where profit is given priority over the well-being of the dogs. Unlike responsible breeders, who place the utmost importance on producing the healthiest puppies possible, breeding at puppy mills is performed without consideration of genetic quality. This results in generations of dogs with unchecked hereditary defects.

Some puppy mill puppies are sold to pet shops—usually through a broker, or middleman—and marketed as young as eight weeks of age. The lineage records of puppy mill dogs are often falsified. Other puppy mill puppies are sold directly to the public, including over the Internet, through newspaper ads, and at swap meets and flea markets.

What Health Problems Are Common to Puppy Mill Dogs?

Illness and disease are common in dogs from puppy mills. Because puppy mill operators often fail to apply proper husbandry practices that would remove sick dogs from their breeding pools, puppies from puppy mills are prone to congenital and hereditary conditions. These can include:

  • Epilepsy
  • Heart disease
  • Kidney disease
  • Musculoskeletal disorders (hip dysplasia, luxating patellas, etc.)
  • Endocrine disorders (diabetes, hyperthyroidism)
  • Blood disorders (anemia, Von Willebrand disease)
  • Deafness
  • Eye problems (cataracts, glaucoma, progressive retinal atrophy, etc.)
  • Respiratory disorders

On top of that, puppies often arrive in pet stores and their new homes with diseases or infirmities. These can include:

  • Giardia
  • Parvovirus
  • Distemper
  • Upper respiratory infections
  • Kennel cough
  • Pneumonia
  • Mange
  • Fleas
  • Ticks
  • Intestinal parasites
  • Heartworm
  • Chronic diarrhea

Do Puppy Mill Pups Display Behavior Problems?

Sometimes. Fearful behavior and lack of socialization with humans and other animals are typical of puppy mill dogs. Puppies born in puppy mills are typically removed from their littermates and mothers at just six weeks of age. The first months of a puppy's life are a critical socialization period for puppies. Spending that time with their mother and littermates helps prevent puppies from developing problems like extreme shyness, aggression, fear and anxiety.

How Are Animals Treated at Puppy Mills?

Puppy mills usually house dogs in overcrowded and unsanitary conditions, without adequate veterinary care, food, water and socialization. Puppy mill dogs do not get to experience treats, toys, exercise or basic grooming. To minimize waste cleanup, dogs are often kept in cages with wire flooring that injures their paws and legs—and it is not unusual for cages to be stacked up in columns. Breeding dogs at mills might spend their entire lives outdoors, exposed to the elements, or crammed inside filthy structures where they never get the chance to feel the sun or breathe fresh air.

How Often Are Dogs Bred in Puppy Mills?

In order to maximize profits, female dogs are bred at every opportunity with little to no recovery time between litters. When, after a few years, they are physically depleted to the point that they no longer can reproduce, breeding females are often killed. The mom and dad of the puppy in the pet store window are unlikely to make it out of the mill alive—and neither will the many puppies born with overt physical problems that make them unsalable.

When and Why Did Puppy Mills Begin?

Puppy mills became more prevalent after World War II. In response to widespread crop failures in the Midwest, the United States Department of Agriculture began promoting purebred puppies as a fool-proof "cash" crop. Chicken coops and rabbit hutches were repurposed for dogs, and the retail pet industry—pet stores large and small—boomed with the increasing supply of puppies from the new "mills."

Which States Have the Most Puppy Mills?

Today, Missouri is considered the leading puppy mill state in the country. Over time, puppy mills have spread geographically. The highest concentration is in the Midwest, but there are also high concentrations in other areas, including Pennsylvania, Ohio and upstate New York. Commercial dog breeding is very prevalent among Amish and Mennonite farmers, with pockets of Amish dog breeders found throughout the country, including in Lancaster County, Pennsylvania, and parts of Wisconsin.

How Many Puppy Mills Exist in the U.S.?

At any given point in time, there are typically between 2,000 and 3,000 USDA-licensed breeders (commonly referred to as puppy mills) operating in the United States. However, this number does not take into consideration the number of breeders not required to be licensed by the USDA or the number of breeders operating illegally without a license. Because so many of these breeders are operating without oversight, it's impossible to accurately track them or to know how many there truly are. The ASPCA estimates that there could be as many as 10,000 puppy mills in the United States.

How Many Dogs Does an Average Puppy Mill Have?

The number of dogs in a puppy mill can vary significantly. Some puppy mills are relatively small, with only 10 breeding dogs. Other breeders run massive operations with more than 1,000 breeding dogs! Because not all puppy mills are licensed and inspected, it's impossible to know the true average.

Are Puppy Mills Always Legal?

Not necessarily. The federal Animal Welfare Act requires breeders who have more than three breeding female dogs and sell puppies to pet stores or puppy brokers to be licensed and inspected by the U.S. Department of Agriculture (USDA). In addition to the federal law, some states have laws that regulate the commercial breeding industry as well.

However, in most cases, the standards that breeders are required to meet by law are extremely minimal. Under the federal Animal Welfare Act, it is completely legal to keep a dog in a cage only six inches longer than the dog in each direction, with a wire floor, stacked on top of another cage, for the dog's entire life. Conditions that most people would consider inhumane, or even cruel, are often totally legal.

For more information, please see our page on laws that protect dogs in puppy mills.

A Local Pet Store Says Its Dogs Aren't from a Mill. Is That True?

There is no legal definition of "puppy mill." Many pet store owners will tell you they get all their puppies from "licensed USDA breeders" or "local breeders." In fact, in order to sell puppies to pet stores, a breeder must be licensed by the USDA! Pet stores often use this licensing to provide a false sense of security to customers, when what it really means is that they do, in fact, get their puppies from puppy mills.

The fact is, responsible breeders would never sell a puppy through a pet store because they want to screen potential buyers to ensure that the puppies are going to good homes.

The Store's Dogs Have Papers. Does That Mean They're from Responsible Breeders?

No. Being registered or having papers means nothing more than the puppy's parents both had papers. Many registered dogs are sold in puppy mills. Don't be fooled by "papers." Many, many pedigreed dogs come from puppy mills! The only way you can be sure that a puppy came from a reputable source is to see where he or she came from yourself.

How Can I Tell If an Online Puppy Seller Is a Mill?

Many puppies sold online come from puppy mills. The only way you can be sure that a puppy came from a reputable source is to see where he or she came from yourself! Responsible breeders would never sell to someone they haven't met because they want to screen potential buyers to ensure the puppies are going to good homes. Learn more about why you should never buy a puppy online.

Where Else Can I Get a Purebred Dog?

Please make adoption your first option. Purebred dogs end up in shelters just like mixed breeds. Breed rescue groups exist for just about every breed possible. If you have your heart set on a purebred, please be sure to visit your local shelter or find a breed rescue group before searching for a breeder.

If you can't find what you want through a shelter or breed rescue group, please learn how to recognize a responsible breeder. When buying a dog from a breeder, always be sure to meet the puppy's parents or at least the mother, and see where the dogs live. Never meet a breeder at an off-site location, and never have a puppy shipped to you sight-unseen.

What Happens If I Don't Buy the Dogs in Pet Stores? Don't They Need Homes, Too?

The public will stop buying pet store puppies gradually over time, not all at once—someone will eventually purchase those dogs at the store. Puppies in pet stores are usually sold quickly. If they don't sell quickly, the owners continue to slash the price until the puppies are sold.

The less they sell for, the less profit the store makes. That means the store will order fewer puppies the next month. And puppy mills will ultimately produce fewer dogs.

How Can I Help Stop Puppy Mills?

The most important thing you can do to help shut down puppy mills is refuse to shop at a store that sells puppies. You can also:

Take the pledge. Pledge that you'll never shop in a store that sells puppies—even if you're just buying food or toys.

Join the Advocacy Brigade. You'll receive alerts that make it easy to fight for laws that protect dogs in puppy mills.

Adopt a mill survivor. Puppy mill survivors often need patient, loving adopters who can help them learn to trust people.

Thank you for standing up for puppy mill dogs!