People love to tame pet animals like cats and dogs. These animals may be concluded as real friends of human. These pet animals are helpful for man in numbers of ways. Various researches say that the pet animals are very much effective in minimizing the mental pressure of the man. And they may be helpful in making mind cool and calm. Different people like to tame cows and buffaloes that in response give various useful products like milk and cheese. These materials are very much nutritive and very much required in our daily diet. So, pet animals can play the role of a real friend.