15 Deadly Dog Breeds That Not Everybody Can Have As Pets

“It’s not the breed that makes a good companion,” says Cesar Millan. “All dogs are great companions. Communication creates a partnership and dogs have the simplest communication on the planet. For them, everything is about trust, respect and love.”

Is a vicious dog’s behavior down to nature or nurture? Most of the time it totally depends upon the way you train and raise the puppy but there are a few breeds of dog that have earned their terrible reputations, often labeled as vicious because of their apparent predisposition to violent interactions with other dogs and humans.

Almost every dog is dangerous when treated or trained in a wrong way. There are several that are due to their physical attributes and violent characteristics numbered as world’s most dangerous canines.


1. Pit Bull

Pitt Bull is considered the most dangerous and aggressive breed in the world. Responsible for 22 deaths so far in the United States Of America, these dogs require extensive and proper training to control aggressive outbursts. Many countries  have banned this extremely aggressive breed of dog.

2. Rottweiler

According to the Center For Disease Control And Prevention (CDC) Rottweilers were responsible for half of all deaths caused by dog’s bite in the United States in the years 1993-1996. A Rottweiler has an extremely powerful bite: 1,180- 1,460 newtons. The breed’s astounding strength makes it all the more dangerous.

3. Tibetan Mastiff

Tibetan Mastiff – the name itself gives the idea of the massive structure of the breed. The breed is generally found in Himachal Pradesh, China, Nepal and Tibet. It is used by the tribes for guarding their sheep from leopards. The breed’s guarding attribute makes it more dangerous as it attacks when it senses danger.

4. Great Dane

Fully grown male Great Danes weigh as much as 200 pounds and stand 86 cm tall. They can be killing machines if kept improperly but can be gentle giants if trained properly. A Great Dane trained by Cesar Millan for his TV show ‘The Dog Whisperer’ attacked a neighbor who passing by during the filming. The neighbor had his hand bitten, but he has since recovered.

5. Dogo Argentine

The Dogo Argetine is a large, white, muscular dog that was developed in Argentina primarily for the purpose of big-game hunting; the breeder, Antonio Nores Martínez, also wanted a dog that would exhibit steadfast bravery and willingly protect its human companion to the death. The breed is banned in certain countries such as Ukraine, Iceland, Australia and Singapore. In the United Kingdom, it is illegal to own a Dogo Argentino without lawful authority and the maximum penalty for illegal possession of a Dogo Argentino is a fine of £5,000 and/or up to six months imprisonment.

6. Boerboel

In 2002, Romania prohibited the import of the Boerboel, and restricted ownership to those with a court order allowing them to own the dog. In 2010, the Boerboel was banned in Denmark for being a fighting dog. In addition, it appears on the Wikipedia list of dog fighting breeds. In 2011, Russia deemed the Boerboel an “especially dangerous breed” subject to mandatory registration and certification. Ukraine classifies the Boerboel as a dangerous dog, subject to mandatory micro chipping, muzzle, and civil liability insurance.

7. Boxer

Boxers come under protective breeds of dogs who are descended from hunting dogs. This breed is good for families seeking security. If trained improperly, it can become furious and aggressive and is very dangerous in such cases. They have earned a reputation of being headstrong. The last reported fatality caused by a boxer is in the USA  was on December 28, 2013 in Arizona, when a man tried to break a fight between boxer and his other dog.

8. Alaskan Malamutes

Alaskan Malamutes are the state dogs of Alaska. As per a study of University Of Texas, Malamutes were responsible for 5 fatal dog bites in the Unites States from 1966 to 1980. They are often used as sled dogs and are known for having high prey drive – which means they often attack smaller animals.

9. German Shepherd

German Shepherd is a large-sized working dog that originated in Germany. Well-trained and socialized German Shepherds have a reputation of being very safe. However, in the United States, one 1996 source suggested that German Shepherds are responsible for more reported biting than any other breed and have a tendency to attack smaller breeds of dogs. An Australian report from 1999 provides statistics showing that German Shepherds are the breed third-most likely to attack a person in some Australian locales.

10. Caucasian Ovcharka

The Caucasian Ovcharka was used for centuries to protect properties, guard livestock, and kill wolves. Today, especially outside the Caucasus, they are employed as companion animals and watchdogs. Most prized as a property guardian, the Caucasian shepherds are good protectors. This a low activity dog, seemingly lethargic when not working, but agile and convincing when it feels its family is threatened. Although certain strains are more vicious than others, all Caucasians are very territorial and dog-aggressive, needing early and careful broad socialization, as well as firm, but never forceful, handling. This breed can be a family dog, if well-trained and socialized.


11. Fila Brazileiro

The Brazilian Mastiff is a large working breed of dog developed in Brazil. It is known for its superb tracking ability, aggressiveness and an unforgiving impetuous temperament. When a Brazilian Mastiff finds its quarry, it does not attack it, but rather holds it at bay until the hunter arrives. Owing to these qualities, the Brazilian Mastiff is used as a guard dog, as a shepherd dog for herding livestock and as a hunting dog for tracking and controlling large prey. When slavery was legal in Brazil, the Brazilian Mastiff was used to return fugitives unharmed to their slave masters. Owing to its size, temperament and potential for aggression, the Brazilian Mastiff has been banned in many countries.

12. Perro de Presa Canario

Presas require early socialization and obedience training. In some situations, the Presa can be aggressive towards other dogs and suspicious of strangers. In March 2012, a 21-year-old man in Sacramento, California, who had finished lifting weights in his garage and stepped outside to cool off, was attacked by two large Presa Canarios (a 120 lb male and an 80 lb pregnant female). Each dog grabbed one of his arms and together they pulled him to the ground. The driver of a passing car witnessed the attack and hit one of the dogs with the car. The victim then jumped onto the car, which sped him away to escape the attack.

13. Doberman Pinscher

In a study published in 2008, aggression was divided into four categories: aggression directed at strangers, owner, strange dogs and rivalry with other household dogs. This study found that the Doberman Pinscher ranked relatively high on stranger-directed aggression, but extremely low on owner-directed aggression. The Doberman Pinscher ranked as average on dog-directed aggression and dog rivalry. The Center for Disease Control and Prevention stated that between 1979 and 1998, the Doberman Pinscher was involved in attacks on humans resulting in fatalities.

14. American Bulldog

American Bulldogs are less aggressive than others but can prove to be a disaster if trained improperly. The goal of the breed was originally to produce a working farm utility dog that could catch and hold wild boar and cattle, kill vermin, and guard an owner’s property. When properly trained, exercised and socialized, this breed can become a great family pet.


15. Husky

Husky is primarily known as a sled dog. Huskies are athletic and energetic dogs. Because of the breed’s history as a working dog, they are not primarily intended to be social – unlike breeds specifically meant to be pets. Siberian Huskies were responsible for 15 mauling deaths in the United States between 1979 and 1998.


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