Of course, we humans are to blame. We are so development-oriented that we almost can sacrifice whatever natural resources in order to obtain a little material gain. It so happens that we cut trees to clear land for farming and level up a lake to build houses. The result of so doing and other destructive developments is deforestation and uncontrollable desertification, thus driving the wild animals homeless like the scene we see above. This mode of progress is no doubt short-sighted and detrimental in the long run.
Some of the harsh lessons we need to learn: first, we should respect the nature and other animals’ rights to survive. Second, we must waste no natural resources and possibly develop alternative forms of energy to replace the decreasing natural resources. Only in this way can we strike a sustainable development of the world.