We usually see that many pet dogs are very well-behaved and cute, in fact, dogs are the same as people, what kind of things. In the world of dogs, in addition to docile dogs, there are also some dogs that are very fierce and difficult to be controlled by humans, they are born like wolves, vicious as wolves, and they are forbidden to breed, because they are very dangerous!
American Bulldog
Originally bred by British immigrants to the United States for hunting purposes, the dog weighed hundreds of pounds! Very fierce, it is forbidden in Denmark and Singapore. In the 19th century, many European immigrants migrated to the United States with their dogs, and the American Bulldog was the descendant of those dogs, most of which were sheepdogs at that time. Although American Bulldogs have been bred, they are still not recognized by any of the major breed registration organizations in the Americas and are not accepted for the touring exhibition. This brave and agile breed of fighting dogs varies greatly in size and coat color, and they are very similar to the English bulldogs used in bullfighting in the 18th century.
Tibetan mastiff
Also known as the Tibetan Mastiff Dog, belongs to the mastiff dog, a large and fierce dog, the coat color is mostly iron-clad gold, yellow, black (black is not pure black, but on the chest, limbs slightly white hair), etc., native to the Qinghai-Tibet Plateau.
It has a strong temperament, noble and arrogant, strong strength, quick movements, poor endurance, and the puppy has a poor memory before adulthood. The typical characteristics of this breed are high alertness, strong territorial awareness, extreme loyalty to the owner, strong hostility to strangers in the territory, and good at protecting the owner and his belongings.
The Tibetan mastiff has a loyal guardian nature, not only the best protection dog for nomadic peoples, but also recognized as the best guard dog for kings and tribal chiefs. The Tibetan mastiff is tall, tough, brave, and wild.
The Tibetan mastiff is about 120 cm long, the body hair is coarse and thick, the outer coat is not too long, and the bottom hair is thick and soft as wool in cold climate conditions, resistant to cold, and can sleep peacefully in ice and snow. In warmer climates, it is very rare. Protecting territory, protecting food, being good at attacking, and having a strong hostility toward strangers; although extremely affectionate to the owner, it poses a serious threat to the public in the human living area. The fiercest dog breed in the world.
Napoli Mastiff
Native to Italy, it originated in 100 BC and belongs to the ancient variety. This dog is a very old breed, its ancestor is the Roman dog Malussos, which fought in the arena in Roman times. Today's Napoli Mastiff is not as aggressive as it used to be, usually kept as a police dog and banned in Singapore and Romania.
Dogo dogs
The Dogo, also known as the Argentine Mastiff or Argentine Dogo, whose Latin name dogo means Bulldog in Spanish, is one of the best breeds bred in South America, and in the 1920s, an Argentine breeder, Dr. Antonio Reis Martinaz, bred this breed in order to protect the manor house defense, hunt fierce mountain lions, and guard dogs and hounds that flood the Americas (Argentina is an agricultural country, and wild boars and mountain lions often expose Argentines to loss and danger, Argentina does not produce jaguars).
At first this ferocious and impressive breed was bred for hunting in herds. Dr. Martinaz bred the Spanish Fighting Dog, the Spanish Mastiff, the Great Dane, an ancient bull terrier, a Bulldog and a Boxer to form a strong and powerful Dogo. Dogo has very strong endurance, and its white coat reflects rather than absorbing heat. Dog fighting activities are still popular in many parts of South America and around the world, and dogos are very attractive to organizers and enthusiasts of dog fighting.
Presa
Presa, Presa Canario, Presa Canario; Originated from the Spanish Canary Islands, molosser type, powerful solid guard dogs, fighting dogs; unique temperament, strong territorial awareness; with a very high natural defense instinct, versatile, highly intelligent, strong learning, acceptance ability, easy to train. Generally speaking, it is calm and quiet, but when action is needed, it is fast and agile; it is gentle and affectionate to the owner and the family, and it is vigilant to strangers.
Feléans
Alias Brazilian Feller, native to Brazil, was originally used for tracking, large hunting. Because of its tall physique, it is used to hunt wild boars and jaguars. At some point it was used to hunt down escaped slaves. Capable of throwing an adult man to the ground, he is included in the list of banned dogs in numerous countries of the United Nations.
Japan Tosa Inu
The Tosa Inu is native to Japan and originated in the 19th century. First discovered in the Tosa region of Japan, it is a medium-sized dog breed that can hunt wild boars. Japanese breeders began to systematically use its hybrid with Western dogs to optimize the breed, according to the Japan Kennel Club, it began to cross with German instruction hounds, English bull terriers, Mastiff, Great Dane and French Mastiffs in 1854, making it much larger than the medium-sized Japanese Tosa, and more ferocious, robust and agile. By the end of 1913 the variety had reached a very high level.
South African mastiff
Mastiff is a species of dog, mainly refers to a tall, fierce temperament, ear drooping, short-haired domestic dog, can help people hunt, but also can be used for doorkeeping or vigilance. The main species of mastiffs include Tibetan mastiffs and snow mastiffs. South Africa's own mastiff - the boerboel The development of history is complex, and its origins date back to ancient times.
American Pit Bull
The American Pit Bull originated in the 19th century and was mainly bred by the American Staff and the American Bulldog. American bulldogs range in weight, from 30 kg to 58 kg. It has a broad slate-like head, strong jaws, muscular, compact body, and a pit bull of excellent pedigree must have a strong bite, lasting endurance and amazing perseverance.
Czech Wolfhound
Czech wolfdog / czekoslovakia wolfdog is a relatively new dog breed. Its pedigree originated in an experiment conducted in Czechoslovakia in 1955. After an initial selection of German Shepherds and Carpathian Wolves, this plan was developed to create a breed that combines the trainability and strength of German Shepherds, structural temperament and carpathian wolves.
Originally designed as a military dog, the breed was developed for military use by Czechoslovak special forces commandos, but was later widely used in search and rescue, using guarding, tracking, herding, agility sports, hunting activities. It was officially recognized as a national breed in 1982 and was officially recognized by FCI in 1989. It is increasingly loved by canine friends around the world.