The value of a good watchdog can be immeasurable but when you do choose and train your animal to be guard to protect you, your family and your property be sure to have properly trained so that while they are protecting you they can do so with putting themselves in as little danger as possible. An animal will love, serve and protect and with the right training your animal can be trained to respond in the necessary ways and with the correct amount of haste and manner.
Any dog that is trained whether it is a big animal or a smaller dog can be a successful guard dog. A key component is teaching your animal to recognise a dangerous or potentially dangerous situation. One of the first steps is letting your animal know that it is good to make a noise to either attract attention and help or to scare off any would be assailants.
Bigger animals such as Rottweilers, Great Danes and Dobermans are generally perceived to be the better watch dogs as they have both the bark and the bite when it comes down to the crunch but they too need to be properly trained to learn how to react and to protect both you and themselves.