25 Dangerous Dog Breeds To Avoid

Dogs are popular domestic animals but they can be dangerous. There are certain breeds of dogs that are more dangerous than others. This can be due to factors including temperament, strength, and size. Large and muscular dogs can be intimidating and they can be hard to control at time. There are 25 breeds of dogs that are said to be dangerous due to the potential they have to inflict injury if they attack. Many of these breeds do strive to please their masters but there are some risks to owning one of these 25 breeds of dogs. These dogs can be dangerous if they are provoked.

These dogs need the proper training and socialization from a young age. This will decrease the chance of the dog acting out and become vicious. Many of these dogs are very loyal to their owners and will protect them against strangers.

For your personal safety, and the safety of the community, we encourage you to read our reviews of all 25 dog breeds that follow…

no dogs allowed sign

Tosa Inu

This dog can grow to be huge. The average weight for this breeds ranges from 130 all the way to 200 pounds. They are some of the biggest dogs in the world. This dog can also grow to be 32 inches in height. This size can be intimidating to many people. If provoked it can easily overpower a person or another dog. This dog was once bred for fighting and due to this, the dog is considered to be dangerous. It is even restricted to own this breed in some countries. A person cannot legally own or breed this dog.

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Parliamentary Dog Of The Year Show

American Bandogge

This dog is a cross between a pit bull terrier and a Neapolitan mastiff. The American Bandogge is a large, muscular dog, with incredible strength that makes it very dangerous. Unfortunately so people have taken a liking to breeding this dog for fighting, which can spell disaster for an unfortunate trespasser or even passerby. This breed is not recommended for anyone with children, as their temperament includes loud barking.

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Champion Canines Compete At Annual Westminster Dog Show

Cane Corso

This breed of dog is very muscular and weights between 99 and 150 pounds. It is another large dog breed that has been kept in the homes. This breed is considered to be one of the last of the coursing Mastiffs and is a descendant of the Canis Pugnax. This dog was once used in times of war so lead to the dangerous reputation. The dog was kept around to protect the soldiers and save them from enemy attacks.

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bull terrier walking around

Bull Terrier

This breed has a huge head and has been known to have more lean muscle tissue than any other type of dog. When a person looks at this dog they often see nothing but muscle. They are prey driven and can be dangerous and attack animals that are smaller than they are. These dogs have also been bred for fighting for a number of years which makes them have a potential for danger. They have gotten a bad reputation for the fighting over the years.

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Champion Canines Compete At Annual Westminster Dog Show

Rhodesian Ridgeback

This dog was originally bred in South Africa and has been known to be able to keep lions away from people. Think about that, this dog is considered a danger to the lion! These dogs are only semi-domesticated and are great hunters. They do not like strangers and need a lot of positive reinforcement as they can be oversensitive to certain situations. This often leads to aggressive tendencies and makes it hard for a dog owner to control the behavior of these dogs.

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Asian International Dog Show

 Dogo Argentino

This dog is white and muscular. It can look intimidating at first glance. The dog was bred for large game hunting and is able to attack large animals including wild boars and pumas. The Dog Argentino is athletic and strong but has been shown to be non-aggressive towards humans. According to the Dangerous Dogs Act of 1991 it is illegal to own this breed in the United Kingdom. This breed is still outlawed in the UK today.

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mastiff dog laying on the ground

Boer Boel

The Boer Boel is one of the larger breeds of mastiffs and was bred for the purposes of protecting the home. You may also know this breed as the South African Mastiff. Many people would keep these as guard dogs, and as working farm dogs. This dog was considered to be the first line of home defense and loves to track down game. These dogs are very loyal and very protective of their families, but their size, strength and temperament can pose a problem. Recently a 59 year old North Carolina woman was killed by her Boer Boel and when the police responded to the 911 call they were met by the dog at the door, who would not let them enter the home.

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Dog Park in Massapequa

Gull Dong

The Gull Dong breed is also known as the Pakistani Bull Dog. It is a mixture of the gull terrier and the bully kutta mixed together. This dog is another very strong and powerful breed. The Gull Dong has also been historically bred for the purposes of fighting. While it is an affectionate breed, it has a reputation of being aggressive especially towards strangers. This can make it a difficult breed to have in your home, as a Gull Dong is unlikely to warm up to your guests. It’s wise to give the dog socialization when they are very young.

(Photo by Bruce Bennett/Getty Images)

dog with gps collar


The Basenji is originally from Central Africa (Congo) and is considered to be a sight hound. The dog is very alert, curious by nature, and can even be affectionate. Unfortunately, the dog does is not a fan of strangers. They are considered to be the second least trainable of all dog breeds and have a strong mind and nature of their own. This dog adapts to it’s situations quickly, and a bad experience can completely unwind years of training that developed a well behaved Basenji. Their intelligence, along with their strong jaws, making them a dangerous breed to own.

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big saint Bernard dog

Saint Bernard

This is a very large breed of dog and it was first from the Swiss and the Italian Alps. This breed was once a rescue dog and they are very large in size. They have been made famous by their rescue missions. Like other large dog breeds that need to be trained to be social around other and with strangers. They may have some territorial behavioral tendencies as well. This is a large dog breed and needs to be well-trained before they get to be too big.

(Photo by Stephanie Keith/Getty Images)

american bull dog walking

American Bulldog

These dogs are muscular and their muscles make them a very massive dog. They are known to be very stubborn at times and they have a great deal of confidence in themselves. This breed was once used for farm work since they are fast enough to catch and hold down cattle. They can kill vermin and they are great guard dogs. If someone does venture onto the property of their owner they can become rather aggressive.

(Photo by Gary Gershoff/Getty Images for the American Kennel Club)

side view of great dane dog

Great Dane

The Great Dane breed is known for their large size. This is one of the biggest dog breeds and is on record for being the tallest dog in the World! These tremendous dogs can grow to sizes of 44 inches tall. They are originally from Germany, where their size allowed them to hunt down wild boar. Due to their size, the Great Dane requires a large living area. It’s recommended that they are socialized as a young pup so that as they grown into their massive size they are a friendly in adulthood. If you are smaller in stature, a Great Dane is probably not the dog for you as it can easily overpower you if not trained properly.

(Photo by Drew Angerer/Getty Images)

shadow of a dog

Fila Brasileiro

The Fila Brasileiro is also known as the Brazilian Mastiff, and is one of the largest dogs to come out of the country of Brazil. It has great tracking abilities but it can be on the aggressive side. They were raised on large plantations, and taught to chase down cattle, jaguars, other animals and runaway slaves. Unfortunately some of these instincts remain today, and in young dogs you might notice that while playing they like to latch their jaw onto the neck of their opponent.

The dog has a lot of potential for aggression and due to its size it is a large threat. This has been banned in countries all around the world because of it’s temperament and possibility of aggression towards humans and other domestic animals.

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dog laying in the mug

Perro De Presa Canario

The Perro De Presa Canario was originally bred for working with livestock. This is a Spanish breed of dog and the name translates “Canarian catch dog”. Just like other dangerous dogs, they need to be socialized early in their life and need intensive obedience training. This dog can be aggressive with other dogs as well as strangers, so you should be cautious of bringing new faces around them.

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akita dog smiling

Akita Inu

The Akita Inu is large in size and is native to the mountains of Japan. This breed comes in two different types, the Japanese Akita and the America Akita. These dogs are strong and independent. They are dominant breeds and can be affectionate with their owner, but they do not get along well with strangers.

These dogs are also territorial and make excellent guard dogs, if that is what you desire in a pet. Akitas are pack animals, and as such they must know where they are in the pecking order. It’s important for the owner to show leadership so that the Akita will follow instructions.

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boxer laying down


This dog is not usually aggressive but nature but there have been several incidents of boxer attacks. This breed has been involved in 48 different incidents from 1982 to 2012. These dogs originate in Germany and they range in weight between 50 and 70 pounds. They are often playful and have a great deal of energy. This dog has a headstrong personality and they can be stubborn at times. The dogs like to do what they want when they want to.

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wolf dog with blue eyes

Wolf Hybrid

This dog is also known as a wolf dog. The dog is a cross between a dog and a wolf , in most cases the dog and the grey world have mated. Since it has a mixture of genetic and even the trains from a wolf the behavior patterns are hard to predict. The dog can be friendly one minute and aggressive at other times. There are also the natural predatory instincts of the wolf in this breed.

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huge chow chow dog

Chow Chow

These dogs are distant from their owners and they are very independent. They need a lot of training or they will become aggressive. These dogs originated in China and range in size from 50 to 70 pounds. They do not like strangers and they are very protective of their owners. These dogs are said to be unacceptable as pets and there have been 238 incidents since 1979 and 1998. The dogs can do well in apartments but they will need a daily walk so they do not become dangerous.

(Photo by China Photos/Getty Images)

Upper Midwest Endures Late Spring Snow

Doberman Pinschers

Doberman Pinschers are alert and intelligent. They are great guard dogs and they will attack when they feel that their owners or their home is in danger. This dog is originally from Germany and has routinely been used as guards and police dogs. They are aggressive with anything that poses danger, as well as strangers. The size of these dogs as well as their strength make them quiet dangerous, and their bite force is reputed to be as much as 600 pounds of pressure.

Can you say ouch? That’s one jaw you do not want on your leg.

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husky dog standing in the snow


These dogs have been known for pulling sleds and going on adventures. They like to play in the snow and can be used to help with a number out outdoor tasks. The dogs and strong and powerful. They can also have some bad habits. They can be dangerous to animals that are smaller than they are. They have a strong predator instinct and can cause trouble if they are bored. The dogs are large in nature which can add to their aggressive tendencies.

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alaskan malamute dog on bench

Alaskan Malamutes

The Alaskan Malamute is related to the Siberian Husky and they need daily exercise. If they do not get the proper amount of exercise they will become bored and easily find their way into trouble. This dog breed can range in size from 70 to 100 pounds, with variation between males and females.

They are very independent which makes it hard to train them, but they are playful. They do not like smaller animals and are not good watch dogs due to their playfulness and need desire to be entertained.

(Photo by Ben Pruchnie/Getty Images)

happy looking rottweiler dog


The Rottweiler (known in German as Rottweiler Metzgerhund) is a very powerful dog and has a natural instinct to protect their owners. They can become dangerous if the owners do not train them properly and they do not get the proper socialization from the time they are born. These powerful dogs have genetic herding and guarding instincts, which make them a wonderful dog to own, but a dangerous dog should you be an intruder or unwelcome party.

(Photo by Dan Kitwood/Getty Images)

Canine Champions Compete In The Westminster Dog Show

German Shepherd

The German Shepherd is a famous breed for not only it’s distinct look, but it’s presence as a police dog. The average weight for German Shepherd dogs falls between 70 and 100 pounds. They are intelligent, confidence, and have little fear, which is why they make great police dogs. These dogs have the potential to become overprotective and they can become very territorial. If they are not trained in the proper way they may attack, which is why all German Shepherd owners are recommended to go implement some form of training regardless of their purpose with the dog. An untrained German Shepherd can easily become a hazard, well beyond their intimidating looks.

(Photo by Drew Angerer/Getty Images)

cute dog outside walking on leash


The Pitbull breed is from the same family as the American bull terrier and they were once bred for bating bulls and bears. They have been used for dog fighting in many parts of the World, and as a result these dogs are strong and muscular. These dogs are considered to be very dangerous and there are even bans on ownership in some communities. These dogs have been feared for years but some owners swear that there are no bad pitbulls, just bad owners. Regardless, the data shows that Pitbulls caused over 50% of the 41 dog bite death fatalities in 2016. That’s an alarming number for sure.

(Photo by David Paul Morris/Getty Images)

dogs playing in the snow

Caucasian Ovcharka

These dogs were once used to protect the livestock on a farm. This breed is assertive, aggressive, and they can be strong-willed. If they are not trained properly from the time of a puppy they can become ferocious. They may also develop some habits that are unmanageable. If these dogs do not like someone they will make this clear. The dogs will defend their humans and this can be a bad thing for a stranger.

(Photo by Bruce Bennett/Getty Images)


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