BY A STAFF REPORTER: A video of a dog protecting a man is going viral on social media. We have always known that animals understand anything much better than humans. Especially dogs. That's why dogs are called people's best friends. In the video that has gone viral on social media, a man can be seen standing on the road and indulging in his mobile phone. Right behind him was the dog, man's best friend. The dog noticed that a dry branch of the tree fell on the man. That's when the dog jumps like a tiger and protects the man. Check out the captivating video: