We say it all the time, "A Dog is a man's best friend!" Or a woman's best friend!  I love my dogs, but I can say that they have ever done anything like this. Don't smile too much.

These two labs go and interrupt a soccer match, but they just look like they are having too much fun. The cool thing is the players don't get aggravated, they pet the dogs. What do you think that dog has in his mouth?