Nowadays an increase in number of endangered animal species is a huge problem. It is caused by pollution and various human activities. We have to do everything we can to save these animals.There are many ways we can help. First of all, we should stop air, water and soil pollution. Because of pollution, nature changes and animals can no longer be able to adapt to new living conditions, so they become extinct. Secondly, living areas of endangered species should be included in the list of national parks or reservations in order to stop any harmful human activity there, because in many cases human activities are the main reason of animal extinction. And finally, we should devote our time and money to various nature saving projects and organizations because if we don’t, we will not be able to do anything to save not only animals but also the whole nature.To sum up, I believe we can all do something to save endangered animals, and we must. We cannot ignore this problem because the consequences may be disastrous. No one can be sure that the whole mankind some day will not be in the same place as endangered animals now.