In this century, many species of animals will not be founded after one decade. While some people are of the belief that we should take an action to save only those animals which give benefits to humans, others think humans should protect all animals for the natural balance. I disagree with the idea that is selective which kind will save, and in my opinion, the protection should be for all kinds of animals because any animal on the Earth has its benefit. I will discuss this point of view in this essay.