Many people like to raise a pet to company them. Especially as there are more only child, so keeping a pet can fill the blank space of a sibling. Dogs are most people’s choice, for they are said to be the loyal friends. In the movies, dogs are described as human being’s trustful friends and they will never abandon their masters. In the famous and touching movie Hachi, a homeless dog named Hachi is raised by a professor. The dog waits for his master to go home after work at the train station every day. Someday, the professor has a heart attack while he is having class and he dies. Hachi never sees his master appear in the train station, but he still goes to the place to wait for his master until the end of his life. Everybody is moved by the loyal dog, his story still goes on.