The biggest dog in the world. Shock!

These are the biggest dogs in the world. Wow! One of the most famous is the dog in Picture 9, named George. The last picture of the dog is I saw in a foreign website, should be false, how can it be so big? Everything else is very, very real. These images are collected by me personally, the big dog to find there is no watermark image is hard oh, these clear if reproduced please indicate: "happy technology park" http://www.hack520.org/Biggest-Dog.