Zoos are necessary because they unite and educate the community, providing an understanding of the interdependence of animals and their habitats, and conduct conservation programs of animals in the wild, including breeding programs to reintroduce extinct and endangered species back into their natural environment. Today, zoos are meant to entertain and educate the public but have a strong emphasis on scientific research and species conservation. There is a trend toward giving animals more space and recreating natural habitats. Zoos are usually regulated and inspected by the government.