The Serengeti is a National Park in Tanzania. Every year, hundreds of thousands of zebras, wildebeest, gazelles, and other herbivores migrate across the plains in search of watering holes. Close on their heels come the Serengeti’s predators: lions, leopards, and cheetahs. It is a fantastic sight to behold. Tourists come from all over the world to witness the migration, hoping to see the big cats as they stalk their prey.