Wildlife is a gift of mother nature. Wildlife does not include only wild animals, but it is also including insects, birds, and micro-organism species etc. and for the balance of the ecosystem it should be treated as important as human beings. Each organism has a vital role in the ecosystem, however, the world's animals are endangered because of their loss of habitat, illegal hunting, deforestation and some of them are on the list of extinction. In this essay, we discuss why they are important and how to protect them.