[the reason because there isnt many other breeds is because they have been breed out of the "working dog" line and dobes havent got the consentration and they are really stuborn i have one of my own its really good and ob but hasnt got any drive because it is a "show dog" line and show people have been trying to breed out the prey drive because they dont really understand it they think that it is aggresion. and the males are more suited for it because they have alot more prey drive.
Actually that’s not quite true about the dobes you just have to look and work through the lines and ask lost of questions if you want a working dob I can let you know where there are some and they will be from working lines.
They are hard and have good working capabilities, they have a high prey drive you just have to understand what you are looking for