A famous poetry was there in Quaran which states “God did not create anything useless in the world”. That is absolutely right. We are seeing many things in our day to day life and we think they are total waste. But actually they are not.As the Quaran poetry says, every small small creatures in the world helps the human beings in some way although in which some of them are harmful. In this article, I am going to list out the top 6 list of insects and animals that helps humans unknowingly. Without them, we as humans wouldn’t survive in this world.Lices are the small insects that live on the scalp and lay eggs on our hair. It is responsible for causing itching feeling on our scalp. The Lices are often spread between one person to another by close contact, hairbrushes, clothing etc.