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Dangerous Dogs In The World – Are You Scared? You Should Be!

Most Dangerous Dogs
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Not all dogs are man’s best friends! Some dog breeds are considered dangerous because they can wreak havoc in anyone’s life as smoothly as drug dealers.

A few years back, Ava-Jayne Corless, an 11-month baby was tragically mauled to death by a pit bull terrier dog while she was sleeping in Blackburn, U.K.

A coroner has mentioned that the incident was the “worst one” he had witnessed in his entire career spanning 20 long years.

Are Pit Bull Terriers dangerous than other dogs? Which dog breeds constitute the dangerous dog’s list?

Take a view of the most dangerous dogs and be careful when you encounter one such breed.

Dangerous Dogs Act In Britain

Responsible ownership remains the key reason to stop dog strikes or bites. According to experts, dog behavior results mainly due to training and rearing provided by the dog owner and little from inherited characteristics.

Dangerous dogs legislation in the UK

In Britain, it is illegal or unlawful to own any of these breeds-

  • Fila Braziliero
  • Dogo Argentino
  • Japanese Tosa
  • Pit Bull Terrier

These dogs breeds are not recognized in the UK. This means they are not part of the Dangerous Dogs Act 1991, later amended in 1997 and 2014.

This makes identification hard.

Dangerous Dogs Act in the United States

The CDC in the United States conducted a real study into fatal dog attacks between the year 1979 and 1996.

In that period, the Pit Bull remained the main culprit with 60 fatal attacks.

The Pit Bull was followed by Rottweiler and German Shepherd in the second and third position.

What the studies revealed?

  • The average or minimum cost per claim (pet insurance included)has increased 90 percent from 2003-2017 affected by increasing higher settlements and medical costs.
  • The total canine-inflicted claim has crossed $700 m USD in 2017.
  • 28,000 people have had reconstructive surgery in America in 2015.
  • The percentage of hospitalization reached a whopping 86% between 1993 and 2008.
  • At present, the cost incurred due to dog bite hospitalization in America is $18,200 USD on an average.

Dangerous Dog Breeds Based On Human Attacks

Dog breeds involved in lethal attacks on humans between 2005 and 2017 in America in the order of maximum impact

  • Pitbull
  • Rottweiler
  • German Shepherd
  • Mixed-breed (Wolf Hybrid)
  • American bulldog
  • Mastiff/Bullmastiff
  • Husky
  • Boxer
  • Doberman pinscher

Between the period, from 2005-2017 in America alone, dogs killed 433 Americans. Rottweilers and Pit Bulls accounted for nearly 329(76%) of these deaths.

Are Pit Bulls Dangerous?

  • Height – 17-19 inches
  • Weight – 30-90 lbs
  • Lifespan – 12-14 years
  • Breed group – Terrier dogs

Pit Bull is a popular common name used for a dog type descended from the terriers and bulldogs.

These pit bull types include Staffordshire Bull Terrier, American Bully, American Staffordshire Terrier, and American Pit Bull Terrier.

The list also includes American Bulldog at times.

Pitbull, also commonly called Pit Bull Terrier, developed in the late 19th century Ireland, Scotland, and England from terrier and bulldog ancestry for stopping and controlling livestock.

The AKC recognizes the American Staffordshire terrier breed only.

Why Pit bulls are considered dangerous?

These dogs were produced to show aggression not only against humans but also against other pets or dogs as well.

Illegal dog fighting clubs encouraged pit bulls with aggressive traits and public attacks led to the creation of a separate legislature.

ADBA regularly condemns naming pit bull dog as an aggressive dog, stating that all dog breeds can produce aggressive behavior when trained badly.

Are Rottweilers Dangerous?

The Rottweiler represents a working dog of excellent strength descended directly from the mastiffs belonging to the Roman legions.

A brilliant protector and playmate within close quarters, the Rottweilers are masters of untimed aloofness.

Rotties are thought to have come from drover dogs. These dogs helped butchers to carry money to the market. Rottweilers were employed as a police dog, a rescue dog, a drover’s dog, a guard dog, and a draft dog.




Are Rotties dangerous by nature?

A properly well-raised Rottie will display traits of courage, confidence, and calmness and not undue aggression.

The Rotties role as a herder and guardian has strengthened its instinct for protectiveness and wariness when meeting strangers or newcomers.

These dogs possess an aloof demeanor that projects them like a dog with downright silliness and playfulness to their dear ones.

Rottweilers are intelligent, self-assured dogs.

Early socialization and proper training will help in controlling a Rottie’s natural territorial instincts.

  • Height – 24-27 inches (male), 22-25 inches (female)
  • Weight – 80-100 lbs(female), 95-135 lbs(male)
  • Lifespan – 9-10 years
  • Breed group – Working dogs

Are German Shepherds Dangerous?

  • Height – 24-26 inches (male), 22-24 inches(female)
  • Weight – 50-70 lbs(female), 65-90 lbs(male)
  • Lifespan – 7-10 years
  • Breed group – Herding dogs

Finest guard dog, the German Shepherd Dogs are highly intelligent, noble,  and agile.

Steady, strong, loyal, and sincere, the GSD is the owner’s dog right through his lifespan.

There are countless reasons for people choosing GSDs over other dogs-

  • The speed and ability to learn new commands are strong
  • Eagerness to sacrifice its life to protect life and property
  • Undefying loyalty and character
  • Gentle family companions and guaranteed guardians

Not all GSDs are aggressive and dog aggression is common to all breeds.

Wolf Hybrid (Samoyeds And Siberian Huskies)

Dogs and wolves share approximately 99% of DNA traits. Hybrids can carry most of the wild behavior that makes humans susceptible to attacks quite easily.

Are Siberian Huskies Dangerous?

  • Height – 21-23.5 inches (male), 20-22 inches (female)
  • Weight – 35-50 lbs(female), 45-60 lbs(male)
  • Lifespan – 12-14 years
  • Breed group – Working dogs

Sibes are dignified, affectionate, and fastidious. Siberians are tactfully strong for their powerful effortless gait.

As born pack leaders, they enjoy and get along well with other pets and Huskies innate affection make them normal watchdogs.


  • Height – 21-23.5 inches (male), 19-21 inches (female)
  • Weight – 35-50 lbs(female), 45-65 lbs(male)
  • Lifespan – 12-14 years
  • Breed group – Working dogs

Sammies are handsomely beautiful. A Samoyed undergoing solitary life is a destructive creature and as pack animals, they should be taught that you are the pack leader.

American Bulldog Dangerous

An affectionate, gentle dog that is much larger than the normal Bulldog, American Bulldogs are confident, loyal, and alert to its people.

Bulldogs possess heroism and they perform best when trained from an early age.

The ancestor of the present-day Bulldog was initially bred in England and later became the most preferred dog for bull baiting.

Alan Scott and John D. Johnson, war veterans, revived the breeding programs of American Bulldogs after the Second World War.

In 1999, the UKC recognized this breed.




  • Height – 20-28 inches (male), 20-24 inches (female)
  • Weight – 60-90 lbs(female), 66-130 lbs(male)
  • Lifespan – 10-15 years
  • Breed group – Working dogs

Are Bullmastiffs Dangerous?

  • Height – 24-26 inches (female), 25-27 inches(male)
  • Weight – 100-120 lbs(female), 110-130 lbs(male)
  • Lifespan – 7-9 years
  • Breed group – Working dogs

Docile at home, and highly fearless at work, the Bullmastiffs are a muscular, large guarder who stopped poachers in Old England.

Bullmastiffs are a cross between a Mastiff and a Bulldog. The Romans pitted Bullmastiffs against human gladiators, bulls, tigers, lions, and bears.

These dogs are submissive and with any guarding dog, early socialization and training is a must when the Bullmastiff puppies are small enough to manage.

Called “Gamekeeper’s night-dog,” these dogs were bred to stop poaching on game preserves and estates.

They function as guardians or war dogs.

Can Labradors Be Aggressive?

  • Height – 21.5-23.5 inches (female), 22.5-24.5 inches (male)
  • Weight – 55-70 lbs (female), 65-80 lbs(male)
  • Lifespan – 10-12 years
  • Breed group – Sporting dogs

The friendly-faced Labrador retriever remains the most popular American dog breed for a long time.

Labrador retrievers are nice-hearted, outgoing, and friendly companions who are always eager to please their owner.

They do not become aggressive as such but Labs are also part of the most dangerous dog breeds list this time.

Boxer Dog Dangerous

  • Height – 24-26 inches (female), 25-27 inches(male)
  • Weight – 100-120 lbs(female), 110-130 lbs(male)
  • Lifespan – 7-9 years
  • Breed group – Working dogs

A smooth-haired dog breeds famous for its “boxing” with its powerful front paws. The boxer, bred originally in Germany, includes traces of Great Dane and bulldog in its blood.

Boxers are intelligent, aggressive, and courageous, and hence are a part of police work.

Without early socialization and training, the Boxer dogs can display erratic behavior and they carry a very strong bite.

Doberman Pinscher Dangerous

  • Height – 24-26 inches (female), 25-27 inches(male)
  • Weight – 100-120 lbs(female), 110-130 lbs(male)
  • Lifespan – 7-9 years
  • Breed group – Working dogs

Dobermans are robust and powerful guard dogs. These dogs are sincere to their companions and will be protective and friendly of a kid with whom they live.

They possess large extents of energy and can become dangerous without early training or socialization.

Doberman Pinschers work as a watchdog, guide dog, and also in the military and police department.

Perro de Presa Canario

  • Height – 22-26 inches
  • Weight – 84-110 lbs
  • Lifespan – 9-11 years
  • Breed group – Foundation Stock Service

The Canario has an attentive and calm appearance. These dogs are mainly suited to herding and as well guarding purpose.

Presa Canarios are well-built dogs, with a black mask and rectilinear frame.

With a low bark, Perro de Presa Canario has a self-confident, balanced temperament. Calm with family members, they are highly devoted and are suspicious of strangers.

When the dog is active, his posture is vigilant and firm. This dog carries incorruptible courage, a strong set of teeth, and little bark. These dogs are excellent fighters as well.

Canario, defending his position, would undergo the strictest of punishments without giving up his position.

The breed recovered its lost heritage in 1982 with the revival of Presa Canario breeding program.

Dogo Argentino

  • Height – 23.5-26 inches(female), 24-27 inches(male)
  • Weight – 80-100 lbs
  • Lifespan – 9-15 years
  • Breed group – Miscellaneous Class

The Dogo Argentino possesses the quick reaction, intelligence, and strength of a pack-hunting. They do well in the pursuit of puma and wild boar.

This dog is athletic, powerful, and large.

He looks like a dog with explosive energy and power. Bred to catch, chase, and find a dangerous game, his expressions are intelligent and alert.

The Dogo is easily identifiable by his completely, short white coat.

Japanese Tosa

  • Height – 21.5-23.5 inches
  • Weight – 100-200 lbs
  • Lifespan – 10-12 years
  • Breed group – Foundation Stock Service

The Tosa dog’s temperament is based on courage, boldness, composure, and patience. Tosa dogs are obedient, quiet, and a tranquil dog.

They are currently used as watchdogs and were produced for fighting purpose only.

Being quiet by nature, this dog may respond aggressively to canines it considers intruders.  Tosa dogs do not behave overtly aggressive towards humans.

These dogs are also known as Japanese Mastiff, Japanese Fighting Dog, Tosa Inu, Tosa Token, Tosa Dog, and Tosa Ken.

Tosa dog is the largest amongst Japanese dog breeds.

Fila Brasileiro Attacks

  • Height – 23.5-29.5 inches
  • Weight – 90-100 lbs
  • Lifespan – 10-12 years
  • Breed group – Working

Called Brazilian Molosser or Brazilian Mastiff, Fila Brasileiro is not an ideal choice for all dog lovers.

He carries an extraordinary streak of bravery, determination, and courage.

Chaining the dog in the yard or giving him no attention can cause aggressive behavior. With early socialization and training, you can somehow manage the natural aggressive nature of this dog.

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