There are certain species that were endangered and actions were taken to cause the species to grow. When this happens, the species that is being protected may return to the wild. Some of these species of animals include the southern white rhino, panda bear, chatham petrel and Yellowstone grizzly bear, to name a few. Certain countries have done a lot of things to help these animals and it has paid off.
For the southern white rhino, the government set rules against poaching and now this animal is surviving in Africa. The population of the panda bear grew to over 1500 and therefore live in both the wild and in captivity. The Chatham petrel which is a bird was endangered at one time and is now not because of the things that were done in New Zealand.