A dog waits at the door: what happens after a few seconds will put a big smile on your face !

This video is proof of how the love of our pet friends can brighten even the worst days: after waiting a long time at the door, each of them perform a unique and moving welcoming ceremony. The video is part of the campaign Adopt a Pet by Coldwell Banker, a real estate company: in their view, no house can be perfect without a dog.