5- Doberman pinscher:
Well, the Doberman pinscher was meant to serve as a guard dog. It was developed in Germany, and said to be a mixture of German pinscher and Rottweiler and so many other breeds. But it seems that he is not meant to serve only as a guard dog but he was integrated into police work and serve in military works because he is fearlessness and because of his strong body and high energy. He accomplished so many hard missions thanks to his intelligence.