In the past, zoos were places where we saw single animals in small and empty cages. However, today zoos are changing in their design. Animals have more space, and some live in groups. Many zoos try to put animals in an environment that is similar to where they live in the wild. Some people who believe animals’ rights argue against having zoos, because they think it is wrong to put animals in cages. However, I support the idea of having zoos, because they allow us to see wild animals that we cannot see otherwise, and they help endangered species from becoming extinct. Zoos have valuable roles to play. They have an educational role and help to preserve certain species. It is important for animals to be treated well and kept in an environment which is as natural as possible. Many zoos today are responding to their critics and changing the way they keep animals so that they can continue their role without harming animals.