In an American zoo, the visitor can walk through a huge special cage that is filled with trees, some small animals and many birds. And it is large enough for all the birds to live naturally.In a zoo in New York, because of special night light, people can observe certain animals that are active only at night when most zoos are closed. Some zoos have special places for visitors to watch animals that live in the desert or underwater. Some other zoos have special places for animals that live in cold conditions like the bears from the Arctic.
Modern zoos not only show animals for visitors, but also keep and save rare animals. For this reason, fifty years from now, the grand children of today’s can still be able to enjoy watching these animals.