Here we have listed some of the Best, Biggest and possibly smartest guard Dogs you can choose from. They are listed based on their Look, Smartness and Strength.
Have a fun choosing best dog for you..
I have made another video of the Most smart and intelligent Dogs in the world.
You can check out it here,
http://youtu.be/yKAIv_n0Q_8
If you are serious about having a pet for your children then must see and select one for them.