How to Spot Puppy Mill Breeders [Guide]
When you’re looking for a new furry family member, it’s so easy to get swept up by adorable photos and promises of the ‘perfect puppy’. But not all breeders have their dogs’ best interests at heart.
Puppy mills, often called backyard breeders or irreputable breeders, only care about making money on the backs of their dogs, who live a miserably life.
Way too many people don’t know how to recognise a puppy mill and will end up with a dog with poor health or serious behavioural issues.
Knowing the warning signs can make all the difference — not just for you but for countless animals stuck in this cycle. Here, I explain how to spot puppy mill breeders because, while it is heartbreaking to hear/read about it, it is absolutely crucial to know.
Also, I will show you just how quick and easy it is to make a sales ad for puppies and I discuss a real-life puppy mill.
TRIGGER WARNING: some images used in this blog post may be disturbing for some people!
I had an incredibly hard time looking for images to put in this blog post as it was just so hearbreaking, and mentally and emotionally draining.
I have chosen to show some pictures, as I believe it is imporant to see things with your own eyes, but I have limited the amount of images (that I would normally use to break up walls of text).
I did not want to show you too many distressing images.
Table of Contents
Puppy Mill Statistics
![UK Puppy Mill Statistics [2024]: - The UK (population 65 million in 2024) has a population of 13.5 million pet dogs; - Approximately 25% of owners admit they have not researched any dog breeders before buying a puppy; - About 1/3 of puppies that are bought through social media are puppy mill dogs; - 1 in 4 of the puppies bought from social media get sick or die within the year; - 1/3 of dog owners have paid for their puppy without even seeing the dog; - Approximately 25% of puppy buyers did suspect the breeder was a puppy mill breeder.](https://yourperfectpupper.com/wp-content/uploads/2025/01/1-4-410x1024.webp)
![US Puppy Mill Statistics [2024]: - The US (population >345 million people in 2024) has a population of 89.7 million pet dogs; - There are an estimated 10,000 puppy mills in the US (licenced & unlicenced); - Over 500,000 dogs are kept for breeding in puppy mills (licenced & unlicenced); - Around 4.3 million puppies are born in puppy mills each year; - About 50% of all puppies born in a puppy mill do not survive past 12 weeks; - Roughly 2 million dogs die each year in a puppy mill — that does not include the breeding dogs.](https://yourperfectpupper.com/wp-content/uploads/2025/01/2-6-410x1024.webp)
You are more than welcome to share or use these graphics, but please give credits and a link to this blog post as they are created by me.
What Are Puppy Mills?
When you hear the term ‘puppy mill,’ it might conjure images of neglected dogs and overcrowded cages — sadly, that’s not far from reality; however, some puppy mills can be deceiving and can appear to be clean. This means you must learn the more covert signs of a puppy mill.
These breeders, often labelled as ‘backyard breeders’ or ‘irreputable breeders’, prioritise profit over the well-being of their animals.

The result? Puppies (and their parents) living in dire conditions, with little thought given to their health or happiness. So, let’s break it down and understand what makes a breeder irreputable, and how this impacts both pups and owners.
IMPORTANT: In the US, roughly half of all puppy mill dogs are sold through pet shops, chains, and superstores. Whatever you do, do NOT buy pets from pet shops!
They Breed for Profit
At the heart of irreputable breeding is 1 thing and 1 thing only: making money. Ethical breeders devote time, care, and resources to ensure they’re improving the breed.
For example, they always screen parent dogs for any health issues, ensuring they only breed with healthy dogs.
Irreputable breeders? They’re churning out litter after litter purely for the paycheque. There’s no focus on proper genetics or raising healthy, happy puppies.
You’ll often find them:

The Conditions Are Heartbreaking
Imagine if your entire life was spent in a cramped, filthy cage. For many dogs in puppy mills, that’s the grim reality. These breeders cut corners in every way possible: no proper housing, zero vet care, and little to no socialisation — because why spend money when profit is the goal?
This means puppies from these environments often suffer from:
It is just so heartbreaking to imagine all this!
Zero Focus on Breed Standards or Genetic Health
A reputable breeder will invest in genetic testing to avoid passing down diseases. Irreputable breeders? They skip this entirely. Why? Because it costs money and takes time — two things they’re unwilling to sacrifice.
Puppies from these breeders can inherit countless health problems, from hip dysplasia to heart conditions, making life harder not just for the dog but for you as their owner.
While pretty much every dog breed in the world has the potential of health issues, reputable breeders will minimise the risks by screening and breeding with healthy parent dogs.
🚩Here’s a red flag: they downplay potential health problems or claim a “one-size-fits-all” approach with their litters. If they act clueless about the breed’s specific needs, don’t just walk, RUN! And report them!
Communication? Forget About It
Trying to get answers from an irreputable breeder is like pulling teeth. They’ll dodge your questions, offer vague promises, or even give you the silent treatment after the sale.
A good breeder sticks around for the dog’s entire life — they’ll answer your questions, offer advice, and even take the dog back if needed. But irreputable breeders? They’re MIA once the transaction is done.
So ask yourself: if they’re not prioritising the dog’s future, do they really care about them at all? Spoiler alert: they don’t.
Identifying Characteristics of Puppy Mills
By identifying red flags early on, you can help break the troubling cycle for puppy mill dogs. Let’s dive into the tell-tale signs of irreputable breeders so you know how to recognise and steer clear of them.
Too Many Breeds & Puppies for Sale
One of the most obvious signs of a puppy mill, whether in a backyard or a pet shop, is having more than 2 breeds available. As you know by now, puppy mills want to maximise profit so the more breeds, the more puppies for sale.
A true, proper breeder usually only has 1 breed, occasionally 2, but that’s it. If you see anyone offering up more than 2 breeds, do not buy! They are a puppy mill!
If you are still in doubt, look at their website (if they have one), social media pages, or anywhere else this person advertises. Do you see they have a large number of litters each year from different breeds or the same breed? Yep, puppy mill!
Here’s what to keep in mind:
Lack of Breed Knowledge
Have you ever asked a breeder questions only to hit a wall of vague or clueless responses? That’s often a huge warning sign. Responsible breeders will gush about their preferred breed — they know every detail, from common health concerns to temperament quirks and even exercise routines.
An irreputable breeder, on the other hand, often lacks even a basic understanding. They may stumble over simple questions about the breed’s needs or talk in generalities rather than specifics. Suspicious, right?
What to watch for:
Poor Living Conditions
Brace yourself — this one’s tough (seriously, I cannot even look at such images without my heart breaking 😢). Many irreputable breeders run puppy mills, where dogs live their entire lives in cramped and unsanitary spaces.
Think small wire crates, faeces littering the floor, and little to no access to fresh air (unless they are out in the open in the backyard) or playtime. It’s the kind of stuff that makes you want to cry (and call animal welfare immediately).

Reputable breeders? They’ll happily let you visit and show off their clean, comfy setup — probably with wagging tails galore greeting you at the door. But if you’re met with excuses like, “Oh, I don’t give tours because of XYZ,” be wary.
Ways to spot poor conditions:
Absence of Health Screening and Documentation
What good is a dog labelled as “healthy and happy” without proof? Irreputable breeders often skip health screenings because it’s costly, leaving you in the dark about risks like inherited conditions.
Worse, these breeders rarely offer proper vet checks or vaccinations for the puppies they’re selling. If they do, it is often a quick wellness check and give a certificate for that. They are not actually checked for diseases or conditions.
So many times have I heard of people getting a dog from a puppy mill (knowingly or unknowingly) that had health issues such as the highly contagious and very deadly parvovirus. These puppies cost you an arm and a leg to nurse back to health…IF they get better at all.
Puppy mill dogs are about 41.6% more likely to develop (serious) health issues compared to dogs sold by reputable breeders. And only about 50% of puppies born in puppy mills survive past 12 weeks of age!
Reputable breeders ALWAYS have the paperwork to back things up — think health certificates, genetic test results, and vaccination records. Irreputable ones? They offer a quick sale but no documentation.
Tell-tale signs of a lack of health screening:
I must make a note about an exception to the rule: sometimes, someone will have an ‘oopsie’ litter. Think, Fido next door escaped and had a rendez-vous with Bella from across the street.
Now, while I hope these people will have the pups checked over by a vet, there might not be any documentation about lineage, inherited conditions, etc.
When you go for a puppy in such a situation, you still need to err on the side of caution because you don’t know anything about the parents (the owners may not even know about any health conditions).
Nonsensical Guarantees of Quality
“You’ll never have a problem with this dog, it’s flawless!” (Yes, often the term “it” will be used instead of “him/her”) Sounds tempting, right? But let’s be honest: no living being is perfect, whether it’s a golden retriever or your grandma’s prized tomato plants.
Irreputable breeders often slap on these wild claims to sell dogs quickly, but they hold no weight — God, they remind me of those terrible Tell-Sell commercials! *shivers*.
Any breeder saying they can absolutely guarantee zero health or behavioural issues is simply lying — remember: if something sounds too good to be true, it usually is! Ethical breeders are open about challenges and encourage you to be prepared as a responsible dog owner. Empty promises? They’re a sign of trouble.
Here’s what to avoid:
Unwillingness to Allow Visits
Picture asking to visit a restaurant’s kitchen only to be told, “Oh, it’s really messy, no need to see it!” Would you feel confident eating the food? I certainly won’t because it sounds fishy! The same logic applies to breeders. If they refuse to let you visit their facility, that’s a massive red flag 🚩.
Ethical breeders take pride in their setup. They want you to see the clean, safe, and enriching environment where the puppies are raised. On the flip side, irreputable breeders might give excuses like “we want to limit outside germs” or “it’s a private space.” Sounds plausible, right? But in reality, they’re likely hiding poor conditions.
What to watch for:
Any ethical breeder would rather give you peace of mind than hide behind excuses.
Be aware: some puppy mills will have a fake ‘homely’ setup to fool you!
When your Spidey-senses are tingling, listen! Look for ‘hidden’ signs, like how are the dogs (both parents and pups) behaving in the owner’s presence (scared, happy to go to the owner, etc.).
See if you can peek out into the backyard or ask to see where the dogs can go outside. If you are being held back here, it might be a good indication they are hiding something!
Sketchy Meeting Spots
If you are still fooled into thinking you bought a pup from an ethical breeder, you might be ask to go to a sketchy and/or neutral meeting spot for the sale. Like with the denied visits, this is so that you don’t see the horrible conditions the dogs live in nor where this breeder lives. Sometimes, puppies are even couriered to you.
No References
An ethical breeder is more than happy to provide you with testimonials and even contact information from previous buyers (should these buyers be okay with that). Giving no references or testimonials is a red flag 🚩!
Not Asking YOU Anything
Any reputable breeder WANTS to know where his/her puppy ends up. They will ask you about any research you may have done into the breed (to gauge if you know what you are up against), what you have done to prepare, etc. They truly care about their dogs and want the best for them. When the seller is not asking you anything, they do not care.
Unprofessional Interaction
Every conversation with a breeder tells a story. Trusted ones? They’re responsive, knowledgeable, and enthusiastic about answering your questions. Irreputable breeders? Not so much.
If someone evades your questions or dismisses your concerns like you’re asking too much, that’s a problem. Communication is the foundation of trust — don’t let vague or defensive answers slide.
Breeders who act cagey may be trying to conceal something, like lack of knowledge, poor practices, or hidden health issues in the pups.
Common behaviours to note:
A good breeder should make you feel supported — not like you’re pestering them. No question is one too many and there are no stupid questions in their book.
Pressure to Purchase
Ever walked into a shop and felt the salesperson hovering over you, hurrying you to make a decision? Now imagine that same pressure… with a puppy. That’s exactly what some bad breeders do. They make eager pet owners feel rushed, using emotional tactics to seal the deal.
Irreputable breeders often spin lines like, “There are others interested so decide today or you’ll miss out!” Or worse, they might guilt you into it with something like, “If you don’t take her, who knows what’ll happen…” That level of manipulation? Completely unacceptable…and shady!
A reputable breeder will always prioritise finding the right home for their pups, not the quickest sale.
Signs of high-pressure tactics include:
Discounted Sales
If you see puppies being advertised for a low price or the ad uses words like ‘sale’, this should get your Spidey-senses tingling! Dogs bought at reputable breeders are usually not cheap — an exception might be a random person who got an ‘oopsie-litter’. That said, the rest of the red flags should still be kept in mind!
A good breeder wants a forever home, not a rushed decision. Remember, you’re choosing a beloved companion, not buying the last loaf of bread at Tesco (Note: a large UK supermarket chain, for the non-UK readers).
Red Flags Online
With the internet, and social media in particular, selling puppy mill dogs has never been easier! As you have seen in the statistics at the beginning of this post, in the UK, 1/3 of all dogs are bought through social media.
It is so easy these days to set up an ad and make it look real. Don’t believe me? Here are 2 ads I created in under 10 minutes with Canva!


If you were to see these ads, you might think they are legit. However, let’s have a closer look and debunk this.
First, look at the price. Now, the prices for Cocker Spaniels (the breed in the images) do vary but they are usually anywhere between $1,000 and $2,000 in the US (I checked the UK and for a proper breeder, you are looking at roughly £1,500 on average). That is quite a difference with the $600/£500 I ‘advertise’!
Secondly, I use buzzwords like ‘happy’, ‘guaranteed 100% healthy’, etc. These are just words. Remember, earlier I said there is no such thing as guaranteed 100% healthy! You might get a vet-signed health certificate but this often just a ‘wellness’ check by a vet without any actual testing/screening done — heck sometimes they haven’t even seen the dog🫢!
When you are in the US, you may see ads with ‘USDA approved’ (or similar), which means absolutely nothing! USDA approved breerders do not exist. (Note: USDA stands for United States Department of Agriculture)
Breeders can be USDA licenced, but that too means absolutely nothing. Puppy mills can be USDA licensed! You see, a USDA licences simply requires the bare minimum of survival standards. This means that breeders are allowed to keep dogs in kennels until they die, never being able to be a real dog, just a breeding machine!
“But what I about the pictures?” I hear you ask…they do look legit, don’t they. Guess again! They are stock pictures I found within Canva, that anyone can use! There are plenty of websites with free-to-use stock photos.
Do Your Checks
If you are looking online for a puppy, do the following:
Puppy Mill Example
Right, I can tell you all about puppy mills, what they look like, how they operate, etc. But for me, being neurodivergent, I really need examples. So, in case you need it too, here’s 1. It is going to be a long section, so feel free to skip to the next chapter and come back to this later.
While I am sure that, by now, you are (should be!) able to spot a puppy mill that has dirty cages and what not, I know there are a lot of ‘hidden’ puppy mills. They look legit, they seem to be responsive, and maybe even somewhat knowledgeable, but they are still puppy mills!
Now, I am not sure I am allowed to name the example I will use, so I will refrain from doing so until I have gathered some (legal) advice, but I can tell you this is one of the main puppy mills in Belgium.
They have been operating for over 30(!!) years and had several name changes over the years — 🚩🚩GIANT RED FLAG #1! A reputable breeder does not have to change names.
They ‘specialise’ in 19(!!) different breeds — 🚩🚩GIANT RED FLAG #2!

So, I did some checks (on 10 February 2024) and found the following in terms of pups for sale (or that have just sold):
- 8 Beagles
- 11 Cockapoos
- 22 Toy Keeshond/Pomeranians (*Note: in some parts, like Belgium, these are considered the same breed; in others, they are 2 separate breeds!)
- 22 English Cocker Spaniels
- 4 Siberian Huskies
- 16 Labradoodles
- 38 Lagotto Romagnolo
- 24 Shiba Inu
This is a total of 145 individual puppies for sale (this includes puppies that have been recently sold, that are reserved, and that are still available).
Let’s look at the Lagotto Romagnolo. Their pups are sold for either €2,500 (~$2,600/£2,100) or €3,000 (~$3,100/£2,500) per pup. I counted 10 pups sold for €2,500, and 16 sold for €3,000 (the rest is either reserved or still available). That is a total of €73,000 (~$75,000/£61,000) earned — and that is just 1 breed!
In fact, I just had a look at all the pups they had, that have either been sold or reserved, and adding up all the money (including the Lagotto Romagnolo mentioned above), they earned/are about to earn €189,000 (~$195,000/£157,000)!
Now, while they will have some costs in the example above, they will still have a significant amount of money leftover. And, they are already advertising litters from 8 different breeds, that are coming soon.
So, why do they look legit then? Let’s look at the image below (taken from their website) and dissect it:

The problem with this puppy mill is that they SEEM to be legit and know what they are talking about. They have a blog about different topics, including the breeds they sell. In 1 of them, about the Beagle, they actuall say they “have a population of around 15 different adult females” … 15! And that is just 1 breed!
One thing that is difficult to dissect are reviews. They have glowing reviews of people who have a healthy dog. But as with all reviews (on whatever), you need to think critically. Many reviews are from people who just got the dog, which means that probably not enough time has passed for the dog to be ill.
It also seems that one needs to dig deeper to actually find the negative reviews and complaints!
Furthermore, as I mentioned earlier, 41.6% of puppy mill dogs are likely to develop (serious) health issues and about 50% of puppy mill puppies survive pas 12 weeks age.
Now, this is an average (and a lot depends on countries but also individual puppy mills), but this means that 58.4% will not develop serious health issues, and 50%(ish) will survive past 12 weeks. Regardless of how good those ‘good’ numbers look, the ‘bad’ numbers are still way higher than in pups from reputable breeders!
In typical AuDHD fashion, I have fallen down a rabbit hole and continued my research. They claim that the Lagotto Romagnolo has “little to no hereditary conditions”. Sounds great, right? Well guess what, (A) they DO have some genetic conditions, and (B) not every health issue is genetic, but they can be prone to it.
The Lagotto Romagnolo Foundation and the Lagotto Romagnolo Club of America, give you more insight and actual information about some (SERIOUS and/or DEADLY) health conditions in this breed. Why do I mention this? They are withholding critical information and pretend it is a 100% healthy breed (remember they claim they try to strive to 100% healthy pups). It is just 1 example of not providing accurate and/or enough information for their own gain.
So, what, is there no animal welfare to adhere to? Yes, and this puppy mill, believe it or not, is licenced! However, having a licence is not always indicative of being a legit, reputable breeder.
In fact, in the US, the AKC, or American Kennel Club, is a dog registry group that often lobbies against stronger humane laws. Yet, according to the Humane Society, there are over 20 breeders (in the US; in 2024) that are linked to the AKC! If you are from the US, you can read ‘The Horrible Hundred 2024’ here.
I hope this example has helped put ‘hidden’ puppy mills into perspective. Yes, they seem legit, they tell you to ‘ask to meet the mother’ etc., but a lot of things can be faked! When in doubt: first check how many breeds one sells! If more than 2, they are a puppy mill, no matter how legit they seem!
The Impact of Irreputable Breeders on Animal Welfare
Puppy mill breeders have a wide-spread impact that many may not have though of — a ripple effect of suffering that spread across the world of animal welfare.
The effects, often hidden from public view, touch everything from overcrowded shelters to lifelong health struggles for dogs. Let’s explore just how significant this impact really is.
Quantity over Quality
Picture this: one female dog, used as a breeding machine, producing litter after litter with no rest. It’s brutal, isn’t it? Overbreeding, i.e. quantity, puts the health of these poor mums at serious risk. Think malnutrition, exhaustion, and even death. They’re treated as disposable assets, not living beings.

But it doesn’t stop there. Constant overbreeding leads to:
Does it save the breeder money? Absolutely. Does it ruin lives? 100%.
Puppies Born into Poor Health
When profit drives the decisions, health goes out the window. With irreputable breeders, there’s no investment in genetic testing or preventative measures. Why bother, right? It’s all about cutting costs. This approach leads to devastating consequences for you and the dog.
Common issues in these puppies include:
Sometimes, you won’t even notice these health issues until months or years later — and by then, fixing them might mean endless vet trips or heartbreakingly tough decisions.

Shelter Overcrowding: A Domino Effect
Here’s where things get even more complicated. Many dogs bred irresponsibly end up in shelters. Why? Some owners can’t cope with the surprise health issues or behavioural challenges; others simply abandon them. And let’s face it, not every home is ready for a surprise £2,000/$2,000 vet bill. (Pet insurance, anyone?!)
Shelters across the country (any country!) are feeling the strain. Overcrowded facilities are forced to stretch limited resources to care for these dogs, who, through no fault of their own, have ended up unwanted. Every dog bred by an irreputable breeder adds to this problem, creating a pipeline no shelter can keep up with.
And the worst part: since these dogs have known health conditions, behavioural issues or both, they are super difficult to adopt out! Many of these dogs end up spending years in a shelter…that is: ONLY if they end up in a no-kill shelter!
Emotional Suffering: The Invisible Wounds
Let’s talk about the less obvious damage. Dogs bred under inhumane conditions often suffer emotionally too. Imagine starting life in an isolated cage, with little human interaction and no chance to play or explore. These experiences leave scars.
Puppies from these backgrounds often develop:
For these dogs, life doesn’t just start on the wrong foot; it starts in a deep, dark hole they must claw their way out of…if they even manage that!
Strain on the Animal Welfare System
From rescue groups struggling to find space to vets encountering more avoidable illnesses, the impact of irreputable breeders ripples far. Each poorly bred and neglected dog becomes a challenge for someone down the line, whether it’s the unsuspecting buyer, the shelter worker, or the system as a whole.
When you buy from these breeders, you’re not just funding their harmful practices. You’re contributing to a cycle that leaves innocent animals paying the ultimate price. And let’s face it, none of them deserve that.
I cannot say the following enough: if you willingly buy from a puppy mill because you feel that you “saved at least 1 puppy”, do not kid yourself!
Not only will you, more than likely, end up with an unhealthy dog (that may not even live to be a few months old!), you are also simply just making more room for a new litter — and that means another mother dog being forced to have yet another litter without any respite!
Fight the urge to “save a puppy” and report the puppy mill to your local council, Humane Society, etc.
Healthy Alternatives to Puppy Mills
Now that you have learned about the troubling truth of puppy mills, you may be left wondering, “Where do I go from here?” The good news is that there are ethical and heartwarming alternatives to finding your next furry companion.
Whether it’s seeking out responsible breeders or adopting a pet in need, you’ve got options.
Remember when I said earlier to not ‘rescue’ a dog from a puppy mill? That does not apply to rescuing one from a shelter — this dog was already purchased by someone else or simply abandoned by the puppy mill.
By you getting one out of a shelter, you are not the one responsible for making room for another puppy mill dog. You are, however, making room at the shelter for another dog in desperate need.
Promoting Responsible Breeding: How to Find Ethical Breeders
Think of a responsible breeder as the polar opposite of the profit-driven, corner-cutting operations I’ve discussed. These breeders genuinely care about their dogs, not just today, but for their entire lives. But spotting a responsible breeder takes some research (and that’s okay because the outcome is worth it).
Here’s what you should look for:
You can also ask your vet or local breed club for recommendations, or even attend a dog show. The folks involved in these communities take their role seriously, and that’s exactly what you need when finding someone trustworthy.
The Benefits of Adoption: Why Shelters Should Top Your List
If feeling like you’ve done something good for the world appeals to you, adoption might be your next move. Shelters and rescue organisations are filled with incredible pets just waiting for a second chance, and trust me, saving a dog’s life is the best feeling in the world — no really, it is! I have owned shelter dogs myself!
Why is adoption such a win-win? Let’s break it down:
Just keep in mind that shelter dogs, like puppies, have their pros and cons.
Key Takeaways & Call to Action
By now, you can probably see how damaging puppy mills are, not just to the puppies they produce, but to dog welfare on a much larger scale. These breeders may present themselves as friendly and approachable, but their actions tell a different story. 💔
Their priorities? Profit first, dogs second (or nowhere on the list at all). Every time a dodgy breeder cuts corners or ignores basic animal welfare needs, puppies and communities are left picking up the pieces. And that’s just not fair, to anyone.
You’ve got power in this situation, though. Choosing carefully when buying or adopting sends the message loud and clear: unethical breeders don’t deserve the spotlight or your cash.
Feel like it’s all too overwhelming? Don’t worry. Tackling this doesn’t have to be complicated. A few thoughtful steps can make a world of difference:
What You Can Do Today
If you have already been looking for a dog, have you ever encountered a (suspected) puppy mill breeder? Or do you know of a family of friend who fell victim to one? If you are comfortable doing so, you are welcome to comment to share your story.
Remember to pin an image to your favourite pet board!


