There are not only pet dogs with gentle personalities, but also mad dogs with manic personalities, so there are not only cute dogs, but also mad dogs. Dogs of any breed cannot be spared.

1. Czech wolfdog

In Czech Slovakia in 1955, pet dog lovers conducted a very scientific experiment. It is to mating and breeding the Demobai wolf in the Carpathian Mountains with the German Shepherd. Since then, the Czech wolfdogs have appeared in the world and look very much like wolves, so they are forbidden to raise them.

2. Presa

This is a fighting dog from the Canary Islands of Spain. It is very big and can give people a strong sense of oppression from a distance. Moreover, the dog's weight can reach more than 100 kilograms. In addition, the dog has a very strong personality and is also bred as a fighting dog, so it has been banned from raising it in Australia and New Zealand.

3. The Tosa

multi-hound originated in Japan in the 19th century and ranked 8th among the top ten mastiffs, and the larger competitive and fighting dogs. Therefore, after a series of training, many Tosa dogs have become one of the fierce dogs in the world. They can be described as ruthless and cruel, but dogs are absolutely loyal to their owners, so they are often raised by wealthy Japanese businessmen or underworlds.

4. The size and weight of this type of Caucasian dog is also quite amazing. Its height is generally above 65 cm, and it can reach about 86 cm. If it weighs, it is generally around 150 catties to 170 catties, and it is also the largest pet dog in the world.

5. The biggest feature of South African Mastiff

The biggest feature of South African Mastiff is that it is very large and very powerful. An adult male is generally between 64 cm and 70 cm tall, while a female is usually between 62 cm and 68 cm tall, and her weight is usually between 90 catties and 120 catties.

6. Fieler dogs

The Fieler dogs native to Brazil rank fifth in the mastiff ranking and are often used for hunting. The hunting objects are basically large wild animals, such as wild boars or jaguars. In ancient Brazil, dogs were often used as slaves to chase and escape, so they were listed on the ban list in many countries of the United Nations.

7. Doggao

This is a large mastiff from South America. The dog's ancestors were Spanish fighting dogs and Spanish mastiffs. Therefore, dogs have many genes. The initial purpose was to hunt. However, after generations of reproduction and development, it inherited its fierce personality and strong endurance, so it was also forbidden to raise in many countries.

8. Rottweiler

Rottweiler has the title of Big Mac among dogs, ranking third among the top ten mastiffs, and Little Cannon is also another nickname for dogs. Rottweiler's skin is very thick, and its body, like steel bars and iron bones, can withstand many stimuli from the outside world. So in many countries, Rottweilers are trained to be very good riot dogs.

9. Tibetan Mastiff

I believe that all shovelers are familiar with them. They exuded a fierce aura all over their bodies. Lion-headed Mastiff is more ferocious than tiger-headed Mastiff, especially for strangers, this is a relatively big danger. So in many information, we can see information about Tibetan mastiffs hurting people, and of course Tibetan mastiffs are also banned from raising them in many countries.

10. Pitbull

This is the first of the top ten mastiffs. It was discovered in the United States of America in the 19th century. Although the dog is not very large, the dog's speed is extremely agile and its combat power is extremely fierce. Its ferociousness is comparable to wild beasts such as lions, tigers, and leopards.