Nowadays, having a lot of zoo around the world. People can learn about the wildlife of animals at the zoo. It's hard and dangerous to go to the wild and look them to subsist. Capturing the animals and corralling them in the cage are the rights violations of the zoo. The animals should have a freedom to live in the wild, but if we carefully consider we will find that the zoos have various good points. First, zoos are the good place that the animals are given food, medical treatment and security. Second, Zoos are the place that saves endangered species and last, zoos can encourage the economy.