The Most Ferocious Zoo of The World Animals Roam Freely is In China. People Are Caged when they visit the zoo. normally people go to visit zoo and they never feels to be the ones in the cages. The zoo in China is switching it up by having the visitors in the cages and animals are free. At the Lehe Ledu Wildlife Zoo in Chongqing City, China the visitors pay to travel through in a caged vehicle while the animals roam free around them.