In the world of opera, singers often play a variety of roles - goddesses, heroes, nobles, civilians – and they must sing and act to interpret the performance. However, the composers challenge singers more than this, not only to be GOD, but also DOG sometimes. In the history of Western opera, there has been too many examples of human voice to interpret voices, gestures and mental statuses of animals. In this concert, we will introduce these special works, so that everyone can see how singers play these friends to humans.