Many guests have come to master encountering the Big 5 in the Kruger National Park and has no longer become a challenge when entering the Park. There is a group of animals in the Kruger National Park for the guests who like a real Challenge. These animals are incredibly rare to encounter in the Kruger Park and can provide a great deal of satisfaction when encountered. This unique and difficult group of animals are known as the Impossible 5 and consists of: the Aardvark, the Riverine Rabbit, the White Lion, the Pangolin, and the Cape Mountain Leopard.