The tibetan mastiff and caucasian ovacharka are the two most dangerous Dog Breeds. Both are the largest mastiffs existing, and have the most ferocious temper. They are both used to guard livestock and hunt bears.
pitbull
mighty dog.
me
The world's rarest dog breed is the New Guinea Singing Dog.
With the criteria of power and aggression, Fila Brazileiro is the most dangerous breed.
The Most Popular Breed of Dog is the Labrador Retriever.
The Affenpinscher is the second smallest breed of Dog.
Any dog of that size can certainly be dangerous, but it's more about the upbringing than the breed.
There is not a specific dog breed that is smarter than any other dog breed in the world than there is in the USA, but the smartest dog breed are poodles.
a cool breed
Sinbad, the dog that was abroad Campbell in World War II was a mixed-breed (mongrel) dog.
The World's Most Popular Breed of Dog is the Labrador Retriever.