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AGGRESSIVE DOG BREEDS
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AGGRESSIVE DOG BREEDS

45 Most Aggressive Dog Breeds
Most Vicious Dog Breeds
Most Dangerous Dog Breeds




What Makes a Dog Aggressive
Dogs are one of the best emotional support humans have. However, some dog breeds are aggressive and dangerous towards people. Sometimes, it gets fatal. Of course, any breed can develop aggression due to various issues. However, the following reasons play a predominant role:

1. Genetics
Dogs like Basenji, Pit Bulls, mastiffs, etc., are meant for hunting. It makes them naturally protective and genetically aggressive. Hence, they tend to attack any potential threat. However, there are many other dog breeds known for their gentle and docile nature.

2. Prey Drives
Prey drive is the instinct of chasing among the dogs or other animals. It is a universal feature of hunting dogs. However, it can be fatal for kids, smaller animals, and visitors.

3. Strength and Biting Capability
Some dogs' aggression is fatal due to their high strength, dominant structure, and high biting capacity. For instance, the Neapolitan mastiff's body is 15% bigger than its size. It bites with 550 psi.

4. Trainability
Some breeds are highly stubborn, which makes them aggressive. For instance, the Basenji is stubborn and difficult to train. Hence, controlling their aggression takes time.

5. Behavioral Issues
Dogs like Siberian Huskies have behavioral issues, which need to be controlled through training. However, breeds like Basenji develop behavioral problems due to boredom or depression. Therefore, pay attention.

6. Territorial Behavior
Most hunting dogs have territorial behavior. They do not tolerate any intruder in their territory, which makes them more protective and aggressive. Again, through proper training, this can be controlled, and they can be socialized.






MOST AGGRESSIVE DOG BREEDS
45 MOST AGGRESSIVE
DOG BREEDS

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MOST AGGRESSIVE DOG BREEDS
LABRADOR RETRIEVER

Temperament: Outgoing, Even Tempered, Intelligent, Kind, Friendly, Agile, Gentle, Trusting

To this day, labrador retrievers are hunting dogs that work alongside people. Weighing up to 80 pounds, they are larger dogs that stand around 2 feet tall. When we think of labs, we tend to think of family dogs. They also do not make the best guard dogs because they tend to trust people. Still, these lovable friendly dogs are on a list of the most dangerous dog breeds in 2023.

Labrador Retrievers are responsible for 2.1% of the attacks in the study. Typically, people believe the dog wanted to defend its family, territory, or food. The unfortunate truth is that sometimes an attempt to correct behavior makes a dog feel backed into a corner and threatened. While they are not the most aggressive dogs out they, they are big enough to knock people over and cause severe damage.




MOST AGGRESSIVE DOG BREEDS
MINATURE SCHNAUZER

Temperament: Intelligent, Obedient, Friendly, Alert, Spirited, Fearless

Miniature Schnauzers are typically lively and alert. They may bark to alert their owners but aren't inherently aggressive. Standard Schnauzers are often considered the most sociable of the trio, balanced in temperament, and great family dogs. Miniature Schnauzers are not the most dog-friendly dogs and can be very vocal, although they are rarely aggressive. This intelligent breed loves to learn tricks but needs a firm and patient owner when it comes to training. Miniature Schnauzers tend to get on well in a busy, family household.




MOST AGGRESSIVE DOG BREEDS
MINIATURE POODLE

Temperament: Intelligent, Calm, Gentle demeanor

Poodles are not typically aggressive animals, but they can develop anxiety that may lead to aggressive behaviors. When these dogs get anxious, they may also get fearful, which can cause them to look at everyone as an enemy. They can also suffer from separation anxiety if they are apart from their owners for too long. Fear: Like stress, fear can lead to defensive aggression in your Poodle. Provide a secure, calm space for your dog to retreat in fearful situations or try to redirect with treats or toys to lower the temperature. Possessiveness: Poodles can be territorial and possessive.




MOST AGGRESSIVE DOG BREEDS
AMERICAN PIT BULL TERRIER

Temperament: Clownish, Intelligent, Obedient, Friendly, Loyal, Stubborn, Affectionate, Gentle, Strong Willed, Courageous

The pit bull has become the poster child for "bully breeds." This pup is one of the most misunderstood breeds in American culture. Almost any pit bull owner will tell you that they are as sweet, loyal, and gentle as can be. However, the broader culture views them as aggressive, unpredictable, and even worse, as a "dangerous dog." Sadly, this breed is disproportionately represented in shelters around the country and is also very common among rescue dogs.

Any dog adopted without knowledge of their parentage, life experiences, or reason for abandonment can end up being dangerous in the wrong hands. Unfortunately, their reputation overshadows the true character of the breed. Because of this, pit bulls and pit bull mixes are commonly banned in communal apartment buildings. This does not mean you should not adopt a pit bull or a mixed-breed shelter dog. Just be prepared to spend more time on your apartment search and get ready to promote your pup to potential landlords.




MOST AGGRESSIVE DOG BREEDS
ROTTWEILER

Temperament: Obedient, Good-natured, Alert, Fearless, Devoted, Confident, Calm, Steady, Self-assured, Strong, Courageous

This is a strong dog. The breed was created to herd and guard. Socialization while still in the puppy stage is essential to have a Rottweiler whoโ€™s comfortable around other pets and people, but you still have to operate with caution. Like the American Pit Bull, the Rottweiler is often featured in media, movies, and television as an aggressive and threatening dog.

If you are considering Rottweiler ownership while living at an apartment, be sure to thoroughly research the breed. Be prepared to face possible issues when trying to rent an apartment with a large dog of this breed. While the Rottweiler's reputation for aggression is slightly unfair, it is a breed of dog that has the potential to be aggressive. The dog's upbringing is key - a well-trained Rottweiler with an experienced owner can be a placid and loving dog, but this is not a breed for novices.




MOST AGGRESSIVE DOG BREEDS
DOBERMAN PINSCHER

Temperament: Intelligent, Obedient, Loyal, Energetic, Alert, Determined, Fearless, Confident, Watchful

Dobermans are great guard dogs. They are loyal and alert, but the breed is wary of other dogs or strangers. Their instinct is to attack, especially if they feel provoked. This breed is best for a more experienced dog owner, who knows how to handle the pup's tendencies towards aggressive guarding behavior. Due to these tendencies towards aggressive guarding behavior, many apartments have breed restrictions that include Dobermans. This is important to consider if you are thinking about getting a Doberman while living in an apartment. Even well-trained Dobermans can exhibit protective behaviors that may be problematic in a densely populated living environment.




MOST AGGRESSIVE DOG BREEDS
MINIATURE PINSCHER

Temperament: Clever, Playful, Active, Outgoing, Responsive, Friendly, Energetic, Assertive, Independent

Miniature Pinschers are loyal and can be protective of their families. While this trait can be endearing, if not managed properly, it can lead to aggressive behaviors towards strangers. Proper training and socialization can help strike a balance, ensuring they are protective but not overly aggressive.








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MOST AGGRESSIVE DOG BREEDS
GERMAN SHEPHERD

Temperament: Intelligent, Obedient, Loyal, Stubborn, Alert, Protective, Confident, Curious, Watchful, Brave, Courageous

Aggression is not always a bad thing in a dog - the German Shepherd's temperament means that it excels as a forces dog, police dog and guard dog. While it is not a dog to get on the wrong side of, if the aggression is channelled in the right way it can be a great pet that is sure to protect its beloved family. You may not think this breed belongs on the list, but without proper socialization and training, the German Shepherd can be an aggressive breed.

They are innately territorial and can become overprotective when it comes to their families. However, German Shepherds are also smart and very trainable. They are the preferred pup of the military, and you will often see them working as police dogs. While their strong protective instincts make them excellent working dogs, these same traits can pose challenges in a densely populated living environment. Therefore, it is important to consider these restrictions and the potential for aggressive behavior when choosing a German Shepherd as an apartment pet.




MOST AGGRESSIVE DOG BREEDS
RHODESIAN RIDGEBACK

Temperament: Dignified, Mischievous, Intelligent, Loyal, Sensitive, Strong Willed

Originally bred to protect cattle from lions in their native Africa, it is perhaps not surprising that the Rhodesian Ridgeback still retains an aggressive streak. They are another breed particularly likely to show aggression towards people they do not know. Another larger dog, this breed can reach 80 pounds. Originally from Africa, the Ridgeback was actually used to keep lions away from livestock. As a result, they have strong guarding instincts. Rhodesian Ridgebacks are a sensitive breed and are often very tentative around strangers. Without proper exercise and training, these traits can lead to challenging behavior when out on walks or even in the common areas of your apartment building.




MOST AGGRESSIVE DOG BREEDS
BASENJI

Temperament: Curious, Intelligent, Playful, Quiet, Affectionate, Energetic, Alert, Confident

The Banenji famously does not bark but it is extreme territorial instincts can lead to problematic aggression - particularly towards other dogs. You also wouldn't want to leave them alone with a small pet like a rabbit or hamster - these are dogs with a sky-high prey drive.




MOST AGGRESSIVE DOG BREEDS
CHINESE SHAR-PEI

Temperament: Suspicious, Affectionate, Reserved, Loving, Devoted, Independent

After Chow, Shar Pei is another Chinese breed who holds a significant place in this list. Sher Pei's has a dual personality. Although, Sher Pei's known as one of the best companion dogs, they are quite aggressive, too. Historically, they were bred for protecting, hunting and pit fighting. Due to this, they are quite stubborn and aggressive. Hence, training them is not everyone's cup of tea. Additionally, following some precaution such as respecting their private space is important for safety. However, with proper training and assistance, they are as gentle as a kid.




MOST AGGRESSIVE DOG BREEDS
TIBETAN MASTIFF

Temperament: Protective, Intelligent, Tenacious, Aloof, Stubborn, Strong Willed

Tibetan Mastiffs can be aggressive when provoked, as they might feel protective if they perceive a threat from strangers. However, with proper socialization and training, they rarely show any signs of aggression. Tibetan Mastiffs are extremely protective of home and family. They require an experienced owner that can provide early and ongoing socialization and consistent training to prevent aggressiveness.




MOST AGGRESSIVE DOG BREEDS
BULL TERRIER

Temperament: Keen, Sweet-Tempered, Stubborn, Protective, Active, Trainable

If not socialized from a young age, your bull terrier can get hostile around small, loud kids. Lack of physical activity. bull terriers need exercise to manage their energy build-up, failure to do this can cause your dog to have outbursts of rage and aggression. Inadequate stimulation. The breed's tenacity can lead to dangerous behavior if mishandled.




MOST AGGRESSIVE DOG BREEDS
BANDOG

Temperament: Easygoing, Even Tempered, Intelligent, Loyal, Spirited, Trustworthy, Stable

A mix of Mastiffs and Pitbulls, Bandogs are powerful and can show aggression if not trained properly. These dogs require experienced handlers to prevent aggressive behavior from escalating. This breed is known to be very intelligent and confident but also quite docile. However, they will need owners who can clearly show that they are the leaders and can remain dominant. If not paired with the right owner, these dogs can become aggressive towards other canines.




MOST AGGRESSIVE DOG BREEDS
STAFFORDSHIRE BULL TERRIER

Temperament: Intelligent, Loyal, Reliable, Bold, Affectionate, Fearless, Courageous

Though affectionate with family, Staffordshire Bull Terriers can be aggressive toward other dogs if not socialized properly. Despite being loving, they require firm management to prevent potential issues. Staffies have proven time and again that their reputation is often misunderstood. They are not dangerous by nature; with the right care, training, and love, they are loyal, gentle companions who bring joy and warmth to any family.




MOST AGGRESSIVE DOG BREEDS
GULL DONG

Temperament: Aggressive, Stubborn

This breed is a cross between a Gull Terrier and a Bully Kutta, both of which are dog breeds native to India. It is a Pakistani powerhouse bred for strength, endurance, and relentless guarding instincts. This warrior on four legs is built to take down threats with sheer force and fearless aggression. The Gull Dong was originally bred from the Gull Terrier and the Bully Kutta, creating a perfect mix of speed, agility, and brute strength. Unlike bulkier guard dogs, this breed is lean and muscular, allowing it to move fast, strike hard, and recover quickly.

If a threat crosses its territory, it does not just bark - it launches into action like a trained combatant. This breed is known for its high pain tolerance, meaning it can take a hit and keep goingโ€”making it an unstoppable force in protection work. Did you know that the Gull Dong is considered one of the toughest dogs in the world? It has a reputation for being nearly impossible to intimidate, making it a top-tier guardian in high-risk environments!




MOST AGGRESSIVE DOG BREEDS
AKITA

Temperament: Faithful, Intelligent, Composed, Loyal, Receptive, Stubborn, Courageous

Akitas were originally bred as Japanese hunting dogs, created for harsh conditions. Today, the breed is an amazing dog since they form strong bonds with the people who care for them. Unfortunately, some Akitas are also uncomfortable around strangers. This can lead to behavior perceived as threatening, whether it represents true aggression or simply fear. They also have a high prey drive, which can lead to some bad behavior if triggered by smaller animals. Many apartments have breed restrictions that include Akitas due to these characteristics.




MOST AGGRESSIVE DOG BREEDS
BULLMASTIFF

Temperament: Powerful, Protective, Reliable, Loyal, Docile, Reserved, Alert, Loving, Devoted, Calm, Courageous

These dogs are seriously large. They average in size between 100 and 130 pounds. No matter what attitude they are exhibiting, they make for an imposing form. They are bred with a guarding instinct, but are actually an easy breed to train and socialize. Taking them out for regular walks can help curb potential bad behavior and early socialization for puppies should ensure they do not guard you aggressively. Paradoxically, given their enormous size, Bullmastiffs are actually excellent apartment dogs in many ways. They are generally quite lazy and lethargic, so they do better with smaller spaces and fewer walks than many other breeds. However, due to their size and guarding instincts, many apartments have breed restrictions that include Bullmastiffs.




MOST AGGRESSIVE DOG BREEDS
ROUGH COLLIE

Temperament: Intelligent, Friendly, Loyal, Protective, Gentle, Active

The elegant Rough Collie probably is not what most people think of as being an aggressive dog. It came as a surprise to researchers from the University of Helsinki when they carried out a survey of 9,000 dog owners and found that this breed topped the table. Rough Collies are very loyal and may be one-family dogs (although most make exceptions for children), but are very rarely aggressive or protective beyond barking and providing a visual deterrent. They are typically excellent with kids. They are eager to learn and respond best to a gentle hand.




MOST AGGRESSIVE DOG BREEDS
PAPILLON

Temperament: Intelligent, Friendly, Happy, Energetic, Alert

The key with the Papillon is to socialise them at an early age - otherwise they can become aggressive towards both people and other dogs. Get the training right though, and they can be playful and affectionate pets. If not properly socialized, Papillons can be distrustful and exhibit aggressive tendencies toward other dogs and people. Papillons may also be very playful and affectionate. Rough Collies are very loyal and may be one-family dogs, but are very rarely aggressive or protective beyond barking and providing a visual deterrent. They are typically excellent with kids. They are eager to learn and respond best to a gentle hand.




MOST AGGRESSIVE DOG BREEDS
ALASKAN MALAMUTE

Temperament: Dignified, Playful, Friendly, Loyal, Affectionate, Devoted

What is true of the Husky tends to also be true of the their close cousin the Alaskan Malamute - and that's the case with possible aggression. They are even bigger than Huskies though, meaning it is even more important for them to be trained properly. A big, fluffy, wolf-like dog, it is possible you won't have much room left to yourself sharing an apartment with a Malamute. Their personalities also take up a lot of space, and you never want to leave a bored Malamute unattended. Boredom often equals destruction with this breed.

These dogs are challenging to train and are bred with a high prey drive, so they probably should not share a home with small pets. Daily exercise will help curb any potential aggressive behavior, but between their large size and intelligent personality, they may not be ideal for apartment dwellers.




MOST AGGRESSIVE DOG BREEDS
CHIHUAHUA

Temperament: Lively, Aggressive, Quick, Alert, Devoted, Courageous

Sometimes affectionately nicknamed "land sharks," these itty-bitty dogs do not like to be underestimated, and it is not unusual to see them squaring up against the biggest dog in the park. Being the smallest of the dog breeds, many Chihuahuas seem to feel the need to overcompensate for what they lack in physical stature by greeting the world teeth first, something that is often encountered in veterinary practice.

While it is understandable that these tiny creatures will feel the need to defend themselves against things that they find large and threatening - virtually everything, it does not mean that their aggressive tendencies should be tolerated. Quite often, if we carefully push past their sharp-toothed defenses, we can show them that we mean no harm. Regular handling, socialization, and introducing them to new people from a young age are vital steps towards a well-mannered Chi. Be mindful that they are likely acting out of fear, but try not to let them succeed in getting away with biting.




MOST AGGRESSIVE DOG BREEDS
DACHSHUND

Temperament: Clever, Lively, Stubborn, Devoted, Independent, Active, Playful, Courageous

Much like their short-statured friends from Mexico, the Dachshund often finds itself towered over by dogs and humans alike. Coupled with their very cute appearance, they are often the victim of well-meaning but inappropriate petting. When someone looms over you with an outstretched hand, it is understandable that you might feel threatened. Socialization is essential to ensure your "wiener dog" stays on their best behavior, but it is also important to ask people to wait until they are invited before reaching down to pet your dog.

Ask any Dachshund owner and they will confess that their adored pup is not always the easiest pet to have in the house. Sausage Dogs are notoriously badly behaved and are not averse to turning to snarls, growls and nips if they are not getting their own way.




MOST AGGRESSIVE DOG BREEDS
JACK RUSSEL TERRIER

Temperament: Intelligent, Clownish, Stubborn, Athletic, Energetic, Fearless, Vocal

Tenacious is one word that springs to mind when talking about the Jack Russell Terrier. Bred to chase, catch, and kill vermin like rats, these terriers are the very definition of "small but mighty". Unfortunately, pent-up energy, reactive nature, and propensity to "act first, think later", means they can sometimes perceive objects in their immediate perimeter like threat or prey, latching onto a hand without thinking.Lots of mental and physical stimulation is vital for these dogs, otherwise, you are left dealing with a wound-up ball of muscle that is itching to chase, lunge, and snap at everything around it.




MOST AGGRESSIVE DOG BREEDS
BORDER COLLIE

Temperament: Intelligent, Tenacious, Keen, Responsive, Loyal, Athletic, Energetic, Alert

If you have ever seen one of these dogs in action herding sheep, you will know how incredibly agile, athletic, and intelligent they are. Although the Border Collie can make a wonderful family pet, those who come from a strong working background may find a more domestic lifestyle a bit stifling. When herding sheep, the Border Collie has to be quick and decisive with the occasional bite to a woolly behind.

In the absence of sheep, these intelligent dogs can become frustrated, with their herding instincts used on other pets or children, and bite reflex coming out in inappropriate settings. If you are looking to bring a herding dog into your home, ensure you have lots of land, toys, and games to keep their bodies and minds active and do your research to find dogs that have been bred as pets for several generations rather than one that has come fresh from the farm.




MOST AGGRESSIVE DOG BREEDS
AUSTRALILAN CATTLE DOG

Temperament: Cautious, Obedient, Loyal, Energetic, Protective, Brave

Also known as the Blue Heeler, these beautiful dogs from down under have similar traits to the Border Collie, with a background in helping farmers herd sheep and cattle across vast properties in Australia. Like the Border Collie, Cattle Dogs that come from a strong herding line are going to find domestic life frustrating, and those instincts are almost impossible to repress. If you are looking for a pet, look for lines that have been bred to be at home in the suburbs rather than bringing a champion herding dog into your home, unless you have a hundred head of cattle to keep them occupied!




MOST AGGRESSIVE DOG BREEDS
CHOW CHOW

Temperament: Aloof, Loyal, Independent, Quiet

This high-maintenance dog breed can be a great pet if cared for properly. But they require a lot of socialization and plenty of exercise and attention. Without these things on a regular basis, some Chows become aggressive and unpredictable. Chows are generally wary of strangers and very protective of their owners. These traits are heightened when the pup isnโ€™t properly cared for, transforming a sweet dog into a dangerous one in the wrong hands. Due to their behavioral tendencies and the necessity for consistent care, many apartments impose breed restrictions on Chow Chows.




MOST AGGRESSIVE DOG BREEDS
CANE CORSO

Temperament: Intelligent, Stable, Even Tempered, Loyal, Reserved, Alert, Fearless, Calm, Quiet, Trainable

You will often see this breed as a trained police dog, thanks to its imposing stature. Intensive training is incredibly important, as these dogs can have aggressive tendencies. In the wrong hands, it is easy for the dog to get out of control, and its strength can make it hard to hold back from engaging with another animal. Its size is also pretty imposing. At an average weight between 90 and 120 pounds, it won't be easy to remove this dog from a confrontation with another animal or human. These factors contribute to many apartments implementing breed restrictions for this type of dog.




MOST AGGRESSIVE DOG BREEDS
GREAT DANE

Temperament: Friendly, Reserved, Loving, Devoted, Confident, Gentle

Size often puts this breed on the list of dogs not allowed in apartments, even though they have a reputation for being gentle pups. While unlikely to bite, without proper training these beautiful behemoths can be aggressive. Nobody wants a giant, aggressive dog coming at them, which is why the breed gets pegged as more dangerous than it actually is. If you are thinking about owning a Great Dane, make sure you get them the right training to ensure they are on their best behavior.




MOST AGGRESSIVE DOG BREEDS
DALMATIAN

Temperament: Outgoing, Intelligent, Friendly, Energetic, Sensitive, Active, Playful

Not a big dog, but definitely not small, Dalmatians are not just fit for the firehouse. Their energy makes them great playmates, but without enough attention and socialization when they are young, problems can arise. Behavioral issues can occur if the pup spends too much time alone, and is not given plenty of opportunities to release its energy each day. On the whole, they are a great breed. But they may not be ideally suited to living in small apartments unless you are able to spend a lot of time with them at home and on walks.




MOST AGGRESSIVE DOG BREEDS
FILA BRASILIERO

Temperament: Docile, Obedient, Loyal, Determined, Brave, Courageous

Also called the Brazilian Mastiff, this particular dog can be an aggressive and unforgiving hunter. While that works great when out for prey, it doesnโ€™t translate well in a more residential setting. An impetuous and dominant temperament makes it dangerous for inexperienced owners. When around people and animals they do not know, the Fila Brasileiro should always be well-controlled and monitored. These traits lead many apartments to restrict this breed.

If you are considering a Fila Brasileiro, it is essential to check your apartment's pet policies and be aware of the breed's specific care needs in a residential environment. The Fila Brasileiro is fiercely loyal and protective of its territory. It can be highly aggressive towards strangers, requiring firm control and proper training. In countries such as the UK, Australia, and Hong Kong, ownership is either restricted or illegal without special exemption.




MOST AGGRESSIVE DOG BREEDS
DOGO ARGENTINO

Temperament: Affectionate, Friendly, Loyal, Cheerful, Protective, Tolerant

Aggression levels in this particular breed caused it to get banned from ownership in the United Kingdom, among other countries. Originally, Dogo Argentino was a big-game hunting dog, going after animals the size of a bear. They are a powerful and beautiful breed, but simply a little too wild to work as a residential pet. They are not ideal for novice dog owners as they may have socialization issues, are wary of strangers, and require significant exercise due to their high-energy levels. In short, they are likely on apartment breed restriction lists and are typically not well-suited for apartment living.

These imposing dogs were bred specifically to take down large game, as well as defend against predators like bears and mountain lions. While they can be loyal companions and very valuable working dogs, the physical and behavioral traits that made them suited to the work they performed pose a potential risk to humans. They are one of only 5 dog breeds banned in the UK. Like any dog breed, in the right home, with the right training, the Dogo Argentino can be a gentle and loving pet, but their protective instincts and strong prey drive can also make them a dangerous one.




MOST AGGRESSIVE DOG BREEDS
BOERBOEL

Temperament: Intelligent, Loyal, Obedient, Territorial, Confident, Dominant

Another guard dog on the list, Boerboel, used to guard farms against lions and leopards in South Africa. This breed is always an excellent tracker and a very loyal pup. They are also quite protective of their loved ones and property, which can lead to threatening displays of behavior when they are out and about. This protective nature may make them a danger to visitors or strangers in their residences. Due to these traits, many apartments have breed restrictions against Boerboels.




MOST AGGRESSIVE DOG BREEDS
SAINT BERNARD

Temperament: Lively, Friendly, Gentle, Calm, Watchful

With a reputation for helping hikers in the Alps, this working dog has also got some attitude. The breed can be stubborn, with a tendency to try and test the authority of their owners. They can also get suspicious of strangers and act aggressively as a result. While they have a little attitude that can lead to aggressive behavior, overall, they are a breed you can properly train and socialize to help with their โ€œstranger dangerโ€ issues. All that said, sometimes it is hard to convince someone that your giant, 140-pound dog is not going to hurt them. Owning one in an apartment building may make other tenants uncomfortable no matter how sweet the pup is.




MOST AGGRESSIVE DOG BREEDS
XL BULLY

Temperament: Calm, Affectionate nature

These relative newcomers to the dog world are not technically a recognized breed at all. They are believed to be a mix of the American Pitbull Terrier and other โ€˜bullyโ€™ breeds such as the American Bulldog, to create a mastiff-sized dog with Bulldog features. Often sought after for their imposing stature and fearsome appearance, the XL Bully has attracted a lot of negative attention both here in the US and abroad, becoming the first dog breed to be banned in the UK since 1991, due to an increasing number of fatal attacks.

Genetics are, of course, only one component of temperament, but we cannot ignore the fact that the behavioral and physical traits these dogs have been selected for are going to make training and socialization more challenging than they ought to be.




MOST AGGRESSIVE DOG BREEDS
POMERANIAN

Temperament: Extroverted, Lively, Intelligent, Friendly, Sociable, Active, Playful

These precious balls of fluff will melt your heart with their "butter wouldn't melt" expressions, but do not be fooled! Some of those fluffballs can be sharp! Much like the Chihuahua, the sweet features and small size of the Pomeranian means that they sometimes seem to think that an attack is the best defense and a quick path to getting their own way. Often the victim of poor training and socialization, the Pomeranian can easily be taught to not bite, and spoiling them will do them no favors.




MOST AGGRESSIVE DOG BREEDS
SIBERIAN HUSKY

Temperament: Intelligent, Outgoing, Friendly, Alert, Gentle

The beautiful wolf-like appearance of the husky has made them a firm favorite amongst dog owners, but they are a breed whose history must be considered. Bred to pull heavily laden sleds over the icy tundra, these dogs work well as a team and often relate better to companions of the canine persuasion than humans. In a pack, roles and relationships are maintained with fierce discipline, and sometimes the husky will apply canine methods in their dealings with humans, forgetting that we donโ€™t have thick coats to protect us from their sharp teeth.




MOST AGGRESSIVE DOG BREEDS
AMERICAN BULLDOG

Temperament: Friendly, Loyal, Energetic, Assertive, Confident, Gentle, Dominant

These large and powerful dogs are not necessarily known for being aggressive or quick to bite, but their strong jaws and necks mean that if and when they do, they can inflict serious damage. Are American bulldogs aggressive towards humans? American bulldogs are very dominant and also very protective. They are very loving towards their own family, their pack if you will, but will show aggression towards strangers due to their protective instinct.




MOST AGGRESSIVE DOG BREEDS
NEAPOLITAN MASTIFF

Temperament: Protective, Obedient, Stubborn, Fearless, Dominant, Trainable

Our furry friends are famous for their unconditional love for their humans. However, a few of them are overprotective, and the Neapolitan Mastiff is one of them. They are extremely protective of their owners, which makes them extremely aggressive towards strangers. Neapolitan mastiffs are large dogs - their body is 15% bigger than their height, with behavioral issues. Hence, it is essential to train them from an early age. However, with proper training, they are manageable enough.




MOST AGGRESSIVE DOG BREEDS
PRESA CANARIO

Temperament: Suspicious, Stubborn, Gentle, Calm, Dominant, Strong Willed

Presa Canario, aka Perro De Presa Canario or Canary mastiff, is known for their strength, fighting capability, and territorial and protective nature. They are highly distrustful of strangers. However, with the family, they are just the opposite. With their "own" people, they are calm, lovable, and perfectly cuddled dogs. According to experts, they are intelligent enough to train; however, due to their aggressive behavior, only entitled trainers can manage them.




MOST AGGRESSIVE DOG BREEDS
TOSA INU

Temperament: Aggressive, Suspicious, Intelligent, Sensitive, Fearless, Brave

Although Japanese Tosa holds the 9th position in this list, they are one of the most aggressive dogs in the World. Countries like Australia, Austria, Denmark, Fiji, France, Hong Kong, Iceland, and Ireland have banned them already. Also, you can not own a Japanese Tosa in some zones of the USA. Hopefully, you canunderstand the potential risk of having a Japanese Tosa. The reason for this aggression is in their genes. They are a crossbreed of mastiffs, great Danes, bull terriers, and Saint Bernards. According to experts, training and making them social is possible. However, they can still bite people to death.




MOST AGGRESSIVE DOG BREEDS
BOXER

Temperament: Intelligent, Friendly, Loyal, Energetic, Cheerful, Bright, Fearless, Devoted, Confident, Calm, Playful, Brave

Boxers usually have a dopey look that helps strangers to roam around them. However, they are highly active and hold immense strength and muscle. Boxers are highly protective of their owners and can do anything to protect them. Moreover, they do not trust anyone easily. Hence, they get aggressive and unmanageable when they consider someone as thereat. Data shows they have a history of only seven deadly bites and several non-fatal bites. Therefore, training them properly is needed.




MOST AGGRESSIVE DOG BREEDS
THAI RIDGEBACK

Temperament: Intelligent, Loyal, Loving, Protective, Independent, Familial

Well bred and properly socialized Thai Ridgebacks make loyal, loving family pets. They are naturally protective of their home and family and can be aggressive or shy when not properly socialized. They are best kept by consistent owners who have a thorough understanding of dog behavior.




MOST AGGRESSIVE DOG BREEDS
LAGOTTO ROMAGNOLO

Temperament: Loving, Keen, Loyal, Active, Companionable, Trainable

The Lagotto Romagnolo is an Italian breed of dog. It is a traditional breed of the formerly extensive marshlands of the Delta del Po, in the eastern part of the Emilia-Romagna region of Italy, where it was used as a gun dog, specifically as a water retriever. Researching the prevalence, comorbidity, and breed differences in canine anxiety in 13,700 dogs found that, compared with other breeds, the Lagotto displayed high levels of noise sensitivity, social fear, and aggression




MOST AGGRESSIVE DOG BREEDS
MIXED BREED

Temperament: less extreme temperamentally

Mixed breed, mongrel, or Heinz 57 โ€“ the ultimate unknown quantity. Ironically, all dog breeds were mongrels at some point; it was only through selective breeding that individual breeds emerged. Predicting the behavior and temperament of a dog with a lucky dip of genetics is impossible, and perhaps highlights the fact that any dog can be dangerous, so the safest and smartest thing to do is to train, socialize, and love them as though the potential to bite is there.

Being able to recognize certain physical and behavioral traits in a crossbreed, however, can help you identify possible problem areas. If you think your dog is part Border Collie, you will want to make sure they have lots of mental and physical stimulation, or a Husky mix might need reminding that their human companions are not just "one of the pack".




MOST AGGRESSIVE DOG BREEDS
WOLF-DOG HYBRID

Temperament: fearfulness of humans, Jigh prey drive, High energy, Territorial, Destructive, Extremely independent

Typically a mix between a domestic dog and a grey wolf, this animal tends to be highly unpredictable. The wolf in it may account for a high prey drive, which can easily lead to aggressive behaviors against other animals. They are especially dangerous around pets smaller than them, since they may try to hunt them. As a result of this heightened prey drive, many apartments have strict policies against wolf hybrids to protect other residents and pets. It is important to consider these restrictions and the potential challenges of owning a wolf hybrid in an apartment setting.






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