Zoo cages refer to enclosed spaces designed for fixing, controlling or protecting animals. These cages can be simple barbed wire or heavy scaffolding structures, usually with observation ports and doors. In the zoo, cages are used not only to protect animals from human harm, but also to provide a safe environment for tourists, so that they can observe and learn the living habits of animals at close range.

However, in recent years, the use of zoo cages has also been criticized. Although zoos exist to protect animals and promote education, some animals move slowly, get sick or die because of lack of enough space and exercise. In addition, because some animals are restricted by cages, they can't behave naturally, which also causes some people's disgust.

In order to improve the environment of zoo cages, many zoos began to adopt more humanized designs. For example, parks can be decorated with more green spaces and waters to provide a more realistic natural environment. In addition, some zoos also plan to build larger areas to meet the needs of animals. These efforts are expected to attract more tourists and make people realize the importance of the zoo and the opportunities it constantly provides for improvement.