Man is a moral being. Non-humans are devoid of moral sense because they cannot distinguish between ‘is and ought’, ‘right and wrong’. On account of moral awareness human actions can be judged as desirable and undesirable. It is a fact that moral concepts and moral valuations are meaningful only in human domain. There can be no disagreement about the fact that human-beings have their moral obligations for their fellow-beings. But the central question in environmental ethics is; whether human-beings have any obligation for the non-human species and towards nature. In the broad sense of the term, nature consists of flora, fauna and different other elements in nature such as the mountains, rivers, forests, earth and atmosphere. Though non-humans do not have moral sense the real issue is whether and to what extent human-beings have any moral duty, moral obligations for the non-humans over and above their duty towards their fellow human-beings.