Get

In Your Inbox

Dogster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Why Are Puppy Mills Bad? 7 Reasons to Stop This Horrible Practice

Share

puppy mill cage

When some people adopt a puppy, they might not think about where their origins are. Do you know where your new pet came from? Thankfully, many people get their dog from a responsible breeder who can provide health records for them and their parents. While shelters might not have all the records of the dog that was surrendered, the staff work hard to give you all the information about the dog that they have on hand.

However, if you get your dog from a puppy mill, several unethical practices are used to produce these puppies for sale. This article addresses the dangers surrounding puppy mills.

divider dog faces oct 2024

What Is a Puppy Mill?

A puppy mill is a breeding facility where the goal is to produce as many puppies as possible. Since the mill’s goal is profit, little care is taken about the facilities or the overall well-being of the breeding dogs. And if the mothers are not in good condition, the puppies may not be in the best health, either.

While puppy mills are not illegal in the USA, there are some states that are instating bans on the retail sale of animals coming from puppy or kitten mills. As of September 2023 those states are:

  • California
  • Maryland
  • Maine
  • Washington
  • Illinois
  • New York
  • Oregon

While it is not a nationwide ban on the practice, it is a step in the right direction to force puppy mills to shut down.

young nice looking couple wants to adopt beautiful dog at animal shelter
Image Credit: hedgehog94, Shutterstock

divider dog faces oct 2024

The 7 Reasons Why Puppy Mills Are Bad

1. Lack of Proper Veterinary Care

One of the biggest issues surrounding puppy mills is the lack of veterinary care. Any pet owner understands that routine vet care and wellness checks are essential to maintaining the animals’ health. Vet care can catch problems before they get out of control. Otherwise, treatable issues and health issues could get so severe they can result in permanent issues or even death.

Severe periodontal disease is one common issue seen in breeding dogs from puppy mills, resulting from a lack of veterinary care. People who run puppy mills care more about profit over care, so dental issues are often left untreated and get worse. Dental disease can range from issues with loose or missing teeth to mouth sores and infections.


2. No Health Testing

When adopting a puppy from a reputable breeder, you get an in-depth report indicating that your puppy’s parents were screened for the relevant genetic and breed-specific issues. However, this is not the case for puppy mills. This can result in genetically based conditions such as hip dysplasia, heart and eye defects being passed down from one generation to the next. Bringing home a puppy only to have them suffer from an unexpected health issue is extremely difficult—and costly. The people running the mill cut corners for profit and don’t care about the health and welfare of their dogs.

Malnourished Skinny Puppy
Image Credit: Igor Ovsyannykov, Shutterstock

3. Exposure to Parasites

Fleas are a common parasite that most dog owners are (unfortunately) aware of; however, responsible pet owners often take action once they see a single flea. Plus, most people opt for preventative measures.

With puppy mills, as long as the female can produce puppies, there is often little concern about dealing with parasites. Fleas will jump from the nursing mother to her puppies. Puppies with a heavy flea burden can suffer from anemia due to the blood loss and their small size, it can even be life-threatening in some cases.

In addition, dogs living in puppy mills often have internal parasites, such as roundworms, hookworms, whipworms, and tapeworms. These internal parasites can cause a long list of problems, including digestive upset, stunted growth, weight loss, and anemia.

Coccidia and giardia are other types of internal parasites that could be plaguing the puppies and spread quickly in crowded, dirty conditions. Giardia is additionally a concern to new puppy owners as it is zoonotic, meaning it can be transmitted to humans.


4. Improper Living Conditions

The conditions in which the dogs are kept contribute to many issues, like the health conditions we mentioned previously. However, cramped living spaces also do not give the dogs room to exercise properly, which could lead to mobility and joint problems. Being in small, restricted enclosures also prevents dogs from getting fresh air; instead, they breathe in the odors from feces, urine, and other dogs.

Stray puppies in a cage. Dog shelter
Image Credit: Yashkin Ilya, Shutterstock

5. Negative Behavioral and Psychological Effects

In addition to the physical damage done by being born and raised in puppy mills, there are the behavioral and psychological effects. Studies have recorded the negative effects in dogs rescued from puppy mills: increased fears and phobias, compulsive and repetitive behaviors like spinning and pacing, house soiling, and being very wary of being touched and picked up.

Puppies born in puppy mills lack important early socialization to humans and everyday experiences, and often struggle with fear and trust issues throughout their lives.


6. Poor Grooming

The lack of proper grooming for the dogs at puppy mills leads to several issues. Dogs with longer hair could get mats. Left untreated, feces and urine could get tangled in the mats, leading to sores and skin conditions all over the body. Matted hair can also form around the ears and eyes, causing infections that could lead to serious hearing and vision problems.

puppies in a cage
Image By: KITSANANAN, Shutterstock

7. Constant Breeding

Female dogs are bred when they are very young, often after they have started their first cycle (between 6 months and a year). They are also bred every available cycle, and puppies are weaned prematurely, so continuous litters are available for sale. Dogs that are continuously bred can lead to health issues due to the physical stress of being pregnant too often without time to recover.

As mentioned before, puppy mills want profit, so when a female dog is no longer able to produce litters (or has too small litters), she is no longer needed. A puppy mill does not want to house and feed a dog that does not bring them income. Plus, they can replace her with another female ready to be bred. What happens to the female dogs? They are often discarded or even destroyed.

divider dog faces oct 2024

Final Thoughts

If you’re like us, the last thing you want to do is support a puppy mill. The best way to end this barbaric practice is to adopt a dog from a reputable shelter, rescue center, or licensed breeder. Fortunately, the ASPCA and the Humane Society have checklists you can follow to help ensure you’re not supporting a puppy mill.

Do your part and ensure these horrible facilities don’t get any of your hard-earned money!


Featured Image Credit: khlungcenter, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Dogster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Dogster’s Weekly Photo Contest Winners: This Spot is Mine! (February 26, 2026)

Every week our team gets the privilege of sorting through our readers photos to choose what dogs will win this weeks contest! See...

We Bred English Bulldogs So Extreme They Can’t Mate Naturally

Picture this: A male English Bulldog waddles over to a female in heat, full of confidence and swagger. Then… nothing. His barrel chest,...

Damning Dry Dog Food Report Not What It Seems

Over the past few days, pet and vet communities have been reeling from the revelation that high levels of heavy metals have been...

Ask Dr. Paola- Help! My Dog’s Won’t Stop Barking! (February 23, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

More related

Do Dogs Like Collars? Vet-Reviewed Reasons & Safety Tips

Dogs and collars go hand in hand, but it’s not as clear to know if dogs enjoy wearing their collars. Most dogs don’t...

Can a Spayed Dog Get Pyometra? Our Vet Explains

In this article, we’ll explore whether a spayed dog can get pyometra (an infection of the uterus) after being spayed. The most common...

How to Clean Corgi Ears: 6 Vet-Approved Tips

Corgis are friendly little dogs with adorable, floppy ears that fold downward as puppies. However, as they grow, their ears start to stand...

Someone Kicked My Dog: 5 Tips on What to Do Next

Whether it’s due to a perceived threat or through no fault of their own, there are incidents in which dogs are kicked while...

Keep reading

How to Cook Salmon for Dogs: Vet-Approved Recipes & What to Know

Most pet parents know salmon is a nutritious treat for their canine friends. However, some owners don’t know the best way to cook salmon for dogs. Salmon should never be offered raw to a dog since salmon poisoning can occur...

raw salmon meat on wooden board

9 Best Dog Foods for Cavalier King Charles Spaniel in 2026 – Reviews & Top Picks

The Cavalier King Charles Spaniel is a gentle, sweet-natured companion that makes an excellent addition to the family. Unlike some small breeds, the Cavalier King Charles Spaniel does well with children, is easy to train, and does not tend to...

Cavalier King Charles Spaniel puppy hairs stand up

Can Dogs Be Vegan? Vet Approved Advice & Safety Tips

Responsible dog owners always want to make smarter, more ethical choices to improve their pet’s physical and mental well-being. With growing awareness around the eco-sustainability and health perks of vegetarian and vegan diets, it’s natural to wonder how a change...

The dog sits near a bowl of food and licks his tongue, dry food and fresh vegetables and fruits

How Often Should Puppies Eat? Vet-Approved Guide & Scheduling

Raising puppies is not for the faint of heart. It’s a tough gig, not unlike raising a newborn baby, but it is extremely gratifying, rewarding, and a whole lot of fun. One of the most important parts of successfully caring...

puppies eating from bowls together

Can Dogs Eat Greek Yogurt? Vet-Verified Nutrition Facts & FAQ

Dogs are known for wanting whatever their human has, and if you are a dog owner, you will know what we are referring to! No matter what is on your plate, your dog will be at your feet, with its...

Can Dogs Eat_Greek Yogurt

Can Dogs Eat Flaxseed? Vet Reviewed Diet & Health Facts

Flaxseeds, sometimes known as linseeds, provide a host of nutritional benefits to humans. They are packed with essential omega-3 and omega-6 fatty acids and have anti-inflammatory properties that can ease joint pain and arthritis. But can dogs have flaxseed? The...

Can Dogs Eat_Flaxseed

9 Best Dog Food for Small Dogs With Allergies in 2026: Reviews & Top Picks

Small dog breeds have special dietary and nutritional needs that must be fulfilled for healthy daily functioning.1 So, it can be pretty challenging to find healthy dog food for small dogs that also have allergies and food sensitivities. For the...

poodle dog eating

Victor Dog Food vs Bully Max: Our 2026 Comparison – Pros, Cons & What to Choose

With the number of dog food brands out there, you are bound to stumble across similar brands in your search for the best option. At first glance, it seems that only the packaging is different, while the ingredients, nutrition, and...

Dogster_Dog Food Victor VS Bully Max

Love Dogs? So Do We! Join the Dogster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Dogster Email Newsletter