Put a fence around the entrance to the zoo so that the entire zoo qualifies as a cage Then cover the whole zoo in savana grass and add plants and lakes Place some animals then walk around as a zoo keeperguest To do this faster do not get staff foodwater dishes or shelters It will look unnatural If you put gazelles in a pack only put about two to six of them or some might ditch the pack If you encounter across a dirty animal wash it or all the animals will get sick and die Note Plant eaters will get eaten