Dogs can be really friendly if you socialize them from a young age. They have to learn that not everything around them is a threat. Some dogs get along fabulously with others, and it is a treat to watch them interact with others. The pooch in the following video is a perfect example of this. He has become great friends with a UPS delivery driver, and shows the world how much he loves him.
This boxer waits on the street every time for the delivery man to visit. He gets really excited when his truck comes by