There are tons of animals in the crater. We saw huge numbers of wildebeest, zebra, gazelles, buffalo and flamingos, but the really amazing thing was all the predators. I think we personally saw about 10% of the spotted hyena population in the whole park - we must have seen close to 30. And several lions, and jackal, and even a serval, which is like a small leopard. They all looked pretty well-fed with all those prey within easy reach. At least when we got out of the car at the picnic points I was not worried about becoming anybody's lunch!