Animals are people's friends.But many wild animals are facing the danger of dying out(灭绝）because the environment has changed greatly.Their living areas are becoming smaller and amaller because of pollution and the development of cities.They have no room to live in except in the zoo.And many of the wild animals now can't find enough food to eat.At the same time,man is killing off animals just to get their fur,skin,teeth and meat.
//people should realize how serious the situation is and something should be done to protect（保护）the animals.We are supposed to set up some nature reserves(自然保护区）,so that animals can live freely.Besides,people should not be allowed to kill endangered animals or eat their meat.We should also do something to make our world cleaner.Fresh air,clean water,and grass are all important for animals because they need them for living.the death of the endangered animals will bring a disaster（灾难）to human beings.