I started a zoo, and let it build up until i had about 100 guests. Then I fenced up the exit, to where the entire zoo was one exibit. I then deleted everything, and built a 20X20 exhibit in the middle. In it i placed all the guests, with hamburger stands, and drink stands, and bathrooms, and a gift shop, and benches. On the outside of that pen, I made a huge savannah area, and filled it with all the herbivores of the savannah. So, it was like the animals were watching the guests. It was a Human Exhibit, for the animals. Get it? Animal happiness wasnt very high....lol