What does a zoo mean for an animal?

Have you ever been to the zoo? I have and i've seen something i completely disliked. Those poor animals were locked in dirty stinky cages...

There are many zoos all over the world. A zoo is a place where animals are confined within enclosures and displayed to the public. The first zoo founded primarily for scientific and educational reasons was the Ménagerie du Jardin des Plantes in Paris (1794). The founders and members of the Zoological Society of London adopted the idea of the early Paris zoo when they established London Zoo in 1828.

Some zoos try to supply animals with more natural living conditions, especially such animals as penguins. Others are usually kept in cages like in jail, whether they are big or small. Zoos are for entertainment. Can you imagine, all their life passes under the eye of people that gaze at them, throw food, tap on the bars or windows to make animal move their heads or make sounds. The animals definitely have a lack of freedom. They are still caught from wildlife and put into zoos. The human thinks that animals need any help. Quite the contrary the human has been killing animals to get food or make clothes

So, there was a solution. The first wild animal park Whipsnade Wild Animal Park was opened in 1931 in Bedfordshire, England.
The park covers 2.4 km² and it's still one of Europe’s largest wildlife conservation parks where animals are kept within sizeable enclosures. Since the early 1970s was built a 7 km² remarkable zoo in the Pasqual Valley near San Diego - San Diego Wil d Animal Park that is run by the Zoological Society of San Diego. Another zoo comparable to these wild animal parks is the Werribee Open Range Zoo in Melbourne, Australia, focusing on displaying animals living in a wide open savanna. This 500-acre zoo is managed by the Zoological Parks and Gardens Board which also manages Melbourne Zoo. One of only 2 American state supported zoo parks is the 535 acre North Carolina Zoo located in Asheboro, North Carolina. So as you see, people have started to think about wildlife preservation. Wildlife preserves or national parks have been set up in some countries to protect wildlife and their natural habitants. These parks are also considered to be good for tourism, ecotourism, environmentalism. I believe it's a good opportunity to save endangered species, because the wilderness is full of dangers, such as habitant destruction and natural predators. Animals manage to get food, to bred but only under the guard. The largest national park in the world is the Northeast Greenland National Park, which was established in 1974. National parks are usually located in places which have been largely undeveloped, and often feature areas with exceptional native animals, plants and ecosystems (particularly endangered examples of such), biodiversity, or unusual geological features.