So your thinking about buying a dog are you.  But why do you want a dog?  This is a fundamental question that you need to ask because the answer to it will determine which dog is right for you, or even if any dog is right for you at the moment.  You should also think about dog training and investing in a book such as secrets to dog training If you want a dog as a a guard dog you need to be ready to give him specific training and if you want a dog as a family pet it will also need training.  You also need to keep in mind that having a dog is expensive.