8 Dog Breeds That Experts Say Should Not Be Kept as Pets

The idea of a “bad” dog breed might sound harsh, but sometimes certain dogs simply aren’t suited for the average home. Whether it’s because of their size, energy levels, or specific care requirements, some breeds can present challenges even for experienced dog owners. Let’s dive into eight dog breeds that experts caution against keeping as pets, especially in the United States.

8. Wolf Hybrids

wolf dog — Wolf-Malamute hybrid. Image by Katie Brady from Missoula, Montana, United States, CC BY-SA 2.0, via Wikimedia Commons

Wolf hybrids might sound like the ultimate exotic pet—part majestic wolf, part loyal canine—but the reality is a bit less “Game of Thrones” and a lot more “Why is my furniture in shreds?” While their striking appearance attracts admirers, experts strongly advise against keeping them as pets for some serious reasons.

A Personality That Keeps You Guessing

Domesticated dogs have spent thousands of years evolving to coexist with humans. Wolves? Not so much. Even with a dose of dog DNA, wolf hybrids often retain their wild instincts, making them unpredictable. They can be aloof, stubborn, territorial, and even aggressive, especially when they hit maturity. And, unlike your Golden Retriever, they don’t always see you as their loving owner—sometimes, they see you as competition.

The “Return to Sender” Phenomenon

Think you’re up for the challenge? Well, statistics beg to differ. Around 65% of wolf hybrids end up in rescues or are euthanized by age three because their owners couldn’t handle them. That’s a heartbreaking reality for both the animals and the people who took them in thinking they’d have a unique, trainable pet. Spoiler alert: They’re not Labradors with a cool backstory.

Legal Maze and Conservation Issues

Even if you really want a wolf hybrid, the law might say otherwise. Many states in the U.S. either ban them outright or impose strict regulations. And for good reason—hybridization poses a threat to wild wolf populations by diluting their genetics, which conservationists aren’t thrilled about. The more hybridization occurs, the harder it is to maintain the integrity of wild wolf populations.

The Bottom Line

Owning a wolf hybrid is a lot like adopting a tornado—you think you can control it, but nature has other plans. While they’re undeniably fascinating animals, they are not suited for domestic life. Unless you live in a high-security wolf sanctuary with acres of land and a PhD in animal behavior, it’s best to admire these creatures from a distance—like in a documentary, where they belong.

7. Caucasian Shepherd Dogs

If you’ve ever wanted a dog that looks like a bear and protects your house like it’s Fort Knox, the Caucasian Shepherd Dog might seem like a dream come true. But before you start imagining yourself walking this massive guardian through the park, let’s talk about why experts say this breed might not be the best fit for the average dog owner.

Built Like a Bear, Acts Like a Tank

With males tipping the scales at up to 154 pounds and standing nearly 30 inches tall, this breed is more of a moving fortress than a pet. Their thick, double coat can make them look even bigger—so much so that they could probably double as a throw rug when they lie down. These dogs were bred to take on wolves and bears, which means they don’t back down easily. In other words, if you’re looking for a cuddly lap dog, this isn’t it.

A Guardian First, a Pet Second

Caucasian Shepherds are incredibly loyal to their families, but their protective instincts can go into overdrive. If they think someone is a threat—even if it’s just your friendly Amazon delivery guy—they won’t hesitate to step in. Without proper training and early socialization, they can become aggressive toward strangers and other animals.

And let’s be honest—if a Chihuahua decides to be aggressive, it’s annoying. If a 150-pound Caucasian Shepherd decides to be aggressive, it’s a lawsuit waiting to happen.

Health Concerns: A Short But Powerful Life

As with many giant breeds, these dogs are prone to hip dysplasia, elbow dysplasia, and heart problems. What’s even more concerning is their shockingly short lifespan—a 2024 study found that they only live around 5.4 years on average. That’s barely enough time to train them properly before they turn into grumpy seniors.

Banned or Restricted in Several Countries

Due to their size, strength, and potential for aggression, the Caucasian Shepherd is banned in Denmark and comes with restrictions in Russia, the very country that bred them for protection. If a country known for its bear wrestlers thinks these dogs might be too much to handle, that’s saying something.

Should You Get One?

If you live in an apartment or think “training” means teaching your dog how to sit once in a while, absolutely not. This breed is not for first-time owners, or even most experienced ones. Caucasian Shepherds need consistent training, strong leadership, and lots of space to roam. Otherwise, they might decide that your living room is their new personal territory, and good luck convincing them otherwise.

In short, unless you have a fortified farm, a strong training background, and zero concern about furniture destruction, you might want to admire these giant fluffballs from a safe distance.

6. Chow Chows

The Chow Chow is an ancient breed with roots tracing back thousands of years to Northern China. With their regal, lion-like mane and famously blue-black tongues, they are one of the most visually distinctive dog breeds. However, their aloof personality and stubborn streak make them a breed that experts often discourage for first-time owners.

Size and Appearance

Height: 17 to 20 inches (43–51 cm) at the shoulder
Weight: 45 to 70 pounds (20–32 kg)
Coat: Thick double coat, available in rough or smooth varieties, in colors such as red, black, blue, cinnamon/fawn, or cream. Their dense fur gives them an almost cat-like grooming routine, as they are known to keep themselves quite clean.

Temperament and Behavior

Chow Chows are not your typical social butterflies. They are highly independent and tend to be aloof, even with their owners. Unlike breeds that thrive on human interaction, Chows prefer to keep their distance, making them more like a dignified roommate than an affectionate companion.

Protectiveness: Chow Chows are naturally wary of strangers, which can lead to aggressive or territorial behavior if not properly socialized.
Training Challenges: This breed is notoriously difficult to train due to its stubborn and independent nature. They are intelligent, but they choose when to listen—often making their owners work harder than they do.
Socialization Needs: Without early and extensive socialization, they can become reactive or aggressive, particularly toward unfamiliar people and animals.

This breed demands an owner who is patient, firm, and knowledgeable about handling dominant, independent dogs.

Health Concerns

Chow Chows have several genetic predispositions that require attention:

Elbow Dysplasia: A staggering 48.6% of Chow Chows over two years old develop elbow dysplasia, making them one of the most affected breeds.
Glaucoma: The prevalence of glaucoma in Chow Chows is 4.7%, significantly higher than the general dog population’s 0.89%, which can lead to pain and vision loss.
Skin Conditions: They are prone to dermatological issues, including alopecia X and atopic dermatitis, which can cause severe coat thinning and itching.
Life Expectancy: The median lifespan for a Chow Chow is approximately 12.1 years.

Expert Concerns

Even experienced dog handlers find Chow Chows to be a handful:

Veterinary Hesitation: Many veterinarians express concerns about handling Chow Chows due to their unpredictability and tendency to snap if they feel threatened.
Trainer Difficulties: Canine behaviorists frequently note that Chow Chows resist conventional training methods, requiring a unique approach that caters to their independent mindset.

Final Thoughts

While their distinctive look and regal personality can be appealing, Chow Chows are not an easy breed to own. Their stubborn nature, training difficulties, and potential for aggression make them a poor choice for first-time or passive dog owners. However, for those with the experience, patience, and leadership skills necessary to properly train and socialize them, a Chow Chow can be a loyal, dignified, and devoted companion—on their terms, of course.

5. Perro de Presa Canario

Presa Canario, dogo Canario, — Presa Canario, dogo Canario. Image by markomarcello via Depositphotos

If you’ve ever thought, “I want a dog that looks like it moonlights as a security guard for a high-stakes diamond vault,” then the Presa Canario might have caught your eye. This muscular, powerhouse breed was originally bred to guard livestock and take down intruders—not exactly your average couch potato companion.

Built Like a Fortress

Let’s start with size—because if you’re considering this breed, you’re basically signing up for a small bear in your living room. Males can weigh up to 160 pounds, while females aren’t exactly petite either, tipping the scales at 150 pounds. Their short, coarse coat comes in fawn and brindle shades, giving them a no-nonsense look that says, “I mean business.”

Protective, Confident… and Not for the Weak-Willed

Presa Canarios are highly intelligent, confident, and naturally protective. They’re not the type to roll over and make friends with every stranger they meet—and that’s the problem. Without proper training and socialization, their territorial instincts can turn into aggression, especially towards unfamiliar people and other animals.

This isn’t a dog you can just “wing it” with. They require a firm, experienced handler who knows how to establish dominance early on—because if the Presa Canario thinks it’s the boss, good luck reclaiming your role as pack leader.

Health Concerns: Strong But Not Invincible

For all their physical strength, Presa Canarios aren’t immune to health issues. They are prone to:

Hip and Elbow Dysplasia – Large dogs often struggle with joint problems, and Presas are no exception.
Heart Conditions – Specifically, dilated cardiomyopathy, which affects the heart muscle.
Eye Issues – Cataracts and other retinal problems can lead to vision impairment.

Their lifespan ranges from 9 to 11 years, which is about average for a breed of this size. But let’s be real—if you’re not prepared for the financial and emotional investment in vet care, training, and handling, this is not the breed for you.

A Breed with a Reputation

If you’re wondering why some countries have outright banned them, just take a look at the stats. Between 2005 and 2017, Presa Canarios were responsible for 18 fatalities in the U.S., making up 3% of all fatal dog attacks. That’s a sobering statistic for anyone considering this breed without fully understanding the risks.

Should You Get One?

Short answer: Probably not—unless you have experience with high-drive, dominant breeds, the time for constant training, and a fully fenced, escape-proof property. This is not a casual pet. It’s a guard dog first, companion second.

For most people, a Presa Canario is too much dog—too strong, too smart, and too independent. But in the right hands, with the right training and leadership, they can be loyal, fearless protectors. Just don’t expect them to welcome the mailman anytime soon.

4. Alaskan Malamutes

Alaskan Malamute. Image by Castenoid via Depositphotos

If you’ve ever looked at an Alaskan Malamute and thought, “Wow, that’s just a big fluffy Husky,”—stop right there. This ancient Arctic powerhouse is not just a bigger Husky; it’s a sled-hauling, snow-plowing, independence-loving workhorse with a mind of its own. And while their majestic appearance and wolf-like charm might be tempting, experts warn that Malamutes aren’t exactly beginner-friendly.

Built for Work, Not Couch Life

These dogs were bred for heavy-duty sled pulling, not for lying around in an apartment watching Netflix.

Size: Males reach up to 85 pounds, females around 75 pounds—meaning they’re huge.
Coat: A thick double coat that makes them look like they walked straight out of the Ice Age.
Colors: Ranges from gray and white to solid white, sable, and even red.

If you live somewhere warm and don’t have air-conditioning, forget about it—these dogs thrive in freezing temperatures.

Personality: Affectionate but Stubborn

Don’t get me wrong, Malamutes can be extremely loving—but they’re also fiercely independent. This means:

They’ll love their family—but they might not obey you.
They’re friendly—but they may not be too interested in pleasing you.
They’re loyal—but also high-energy escape artists.

Malamutes aren’t big barkers, but they do “talk”—think deep howls and expressive grumbles. If you don’t want a dog that sounds like it’s debating with you, reconsider.

Training: A Battle of Wills

Alaskan Malamute is tough to handle via Depositphotos

If you expect a Malamute to fetch your slippers and obey your every command, you’re in for a rude awakening. This breed is known for:

Independence – Training can feel like negotiating with a teenager who just got their first car.
Strength – If they decide to pull on the leash, you’re going where they want.
Prey Drive – Small animals? Consider them gone if your Malamute decides they look fun to chase.

Early socialization and firm, consistent training are non-negotiable if you don’t want a 75-pound wrecking ball pulling you down the street.

Health Issues: A Strong Dog with Weak Spots

Even though they’re built like a tank, Malamutes aren’t invincible. Some common health problems include:

Hip Dysplasia – Because big dogs, big problems.
Inherited Polyneuropathy – A nerve disorder that can affect mobility.
Eye Issues – Cataracts and progressive retinal atrophy can impact vision.
Hypothyroidism – Can cause weight gain and low energy.
Zinc Deficiency – Leading to skin and coat problems.

Regular vet checkups and a good diet can help manage these risks, but be ready for potential long-term medical bills.

Not Always as Friendly as They Look

Malamutes have a big, fluffy, teddy bear appearance, but don’t let that fool you.

They can be sweet and gentle—with the people they know.
They can also be aggressive—studies show Alaskan Malamutes have the highest fatal attack rate among dog breeds (6.79 deaths per 100,000 Malamutes owned).

This isn’t because they’re inherently dangerous—it’s because a poorly trained, unsocialized Malamute is a recipe for disaster.

Final Verdict: Should You Get a Malamute?

If you:

Have experience with strong-willed, independent dogs.
Have a large yard and lots of time for exercise.
Are willing to put in the training and socialization work.

Then, maybe—maybe—you can handle a Malamute.

But if you:

Want an eager-to-please companion.
Have limited time for exercise and training.
Expect them to behave like a Labrador.

Then walk away now—before you end up with a massive, stubborn, high-maintenance dog you can’t handle.

Alaskan Malamutes are breathtaking, intelligent, and affectionate—but only in the right hands. If you’re up for the challenge, you’ll get a loyal, snow-loving companion for years to come. If not, well… there are plenty of lower-maintenance dogs that won’t turn your home into a winter survival course.

3. Dogo Argentino

Doggo Argentino. Image by joseltr, CC0, via Wikimedia Commons

At first glance, the Dogo Argentino looks like a dog sculpted from marble—lean, muscular, and built for action. Bred for hunting wild boar and puma in Argentina, this breed isn’t your average family pet. They’re fearless, powerful, and incredibly loyal—but they also come with a set of challenges that make experts warn against them as household pets.

A Dog That Looks Like It Belongs in a Gladiator Arena

If you’re thinking of getting a Dogo Argentino, be prepared for a dog that is as physically imposing as it is strong-willed.

Size: Males reach up to 100 pounds, females slightly less—but don’t let the numbers fool you; this dog is pure muscle.
Coat: Their short, white coat looks regal, but it comes with a downside—they’re prone to sunburn and skin cancer.
Appearance: The only acceptable marking is a dark patch near the eye, but even that can’t cover more than 10% of the head—because aesthetics matter, apparently.

Temperament: Fierce, Loyal, and Not for the Timid

Dogos are intelligent, affectionate, and devoted to their families. But they’re also:

Highly protective – They take their guarding duties seriously. Intruders? Not happening.
Dominant and strong-willed – If they sense you’re a pushover, they’ll take control.
Not always animal-friendly – Their prey drive is sky-high, meaning smaller pets and unfamiliar dogs may not be safe around them.

A well-trained Dogo Argentino is a loyal protector, but without proper training? You’re looking at a potential liability.

Training: You Need More Than a YouTube Tutorial

If you think watching a few training videos will be enough to handle a Dogo, think again. This breed requires:

Firm, consistent leadership – They respect strength, not hesitation.
Early and extensive socialization – Without it, they can become overly territorial and reactive.
Regular mental and physical stimulation – A bored Dogo is a destructive Dogo.

This isn’t a dog for first-time owners. Even experienced handlers need patience, time, and a deep understanding of canine behavior to manage this breed.

Health Concerns: Built Tough, But Not Invincible

While robust, the Dogo Argentino has its fair share of health risks:

Deafness – About 25% of Dogos are born deaf in one or both ears.
Hip Dysplasia – Common in large breeds, leading to mobility issues.
Skin Cancer – Their white coat makes them highly susceptible to sunburn and related skin conditions.
Reproductive Issues – Studies show 6.69% of Dogo births result in difficult labor, sometimes requiring C-sections.

Regular vet visits and responsible breeding practices help, but potential owners should be prepared for possible medical expenses.

The Legal Side: Not Welcome Everywhere

Many countries have banned or restricted Dogo Argentinos, including:

Australia, New Zealand, Norway, and the UK – Their protective nature and potential for aggression have made them illegal in several places.
Strict ownership laws in the U.S. – Some states require special permits due to their reputation as a “dangerous” breed.

Before you even consider bringing one home, check your local laws—otherwise, you might end up with a dog you can’t legally own.

Final Verdict: Should You Get a Dogo Argentino?

If you:

Have extensive experience handling strong, dominant breeds.
Are committed to training and socializing from day one.
Have a secure, spacious environment for them to thrive.

Then maybe—just maybe—a Dogo Argentino could be right for you.

But if you:

Are a first-time dog owner.
Expect a laid-back, easygoing pet.
Have small children, other pets, or an unsecured backyard.

Then do yourself (and the dog) a favor—look for a breed that’s easier to manage.

The Dogo Argentino is not just a dog; it’s a commitment. Get it right, and you’ll have a fiercely loyal protector. Get it wrong, and you’ll have an uncontrollable powerhouse that could end up causing serious trouble. Proceed with caution.

2. Fila Brasileiro (Brazilian Mastiff)

The Fila Brasileiro, also known as the Brazilian Mastiff, is a massive and fiercely loyal breed with deep roots in Brazil’s working and hunting traditions. Originally bred for tracking, guarding livestock, and protecting estates, this breed is known for its unwavering loyalty to its family and its natural distrust of strangers—a trait called “ojeriza.” While they are affectionate with their owners, Filas require specialized training and socialization to be manageable in modern homes.