It's always great to have a friend who can stand for you in any situation. And dogs are second to none in this respect - they will always love you no matter how beautiful, successful or humorous you are. Moreover, if you train your dog well it can even bite those who treat you badly. However, all of a sudden it came out that not only dogs but people themselves can also stand for their animal friends! Watch this surprising fight between a human and a kangaroo and feel proud to be a man who can also fight like this!