The Planet Zoo DLC system offers a wide range of exclusive content, including new scenarios, animals, and gameplay mechanics. For example, the "Dolphin Enclosure" DLC pack adds a new aquatic exhibit to the game, complete with dolphins, sea lions, and other marine animals. The "Amur Leopard & Snow Leopard" DLC pack introduces two new endangered species to the game, along with their habitats and care requirements. These DLC packs offer players new challenges and opportunities to build and manage their zoos.