1. American Staffordshire terrier
This dog is bred to take it against bears and bulls. Many people are afraid of this dog breed, while the owners claim that it is a perfect loyal dog. When a pack member is affected (the family) badly, the dog becomes aggressive. Good socialization of a Staffordshire at a young age is therefore essential.
One of the most intelligent dogs and one of the bravest. In the house a very quiet family dog, but when there is danger, it is very protective. In addition, the Rottweiler is super strong, has a super condition and does not suffer much from pain.
3. Doberman Pinscher
In 1875 for the first bred in Germany, a cross between a Rottweiler, Greyhound and a Terrier. Most dobermanns will not hesitate for a long time to attack when the boss is in danger.