Crocodile image. Remaining essentially unchanged since the time of the dinosaurs, crocodiles live largely in rivers, lakes, or swamps; occurring commonly along the Mara and Grumeti Rivers of the Serengeti. Feeding on insects when young, on fish while juveniles, and finally graduating to large mammals at maturity. A large crocodile will weigh 1000 pounds and be 18 feet long and can easily kill and consume wildebeest, zebra, and even the 1,500 pound Cape Buffalo. There is evidence that crocodiles can live as long as one hundred years, meaning that the same ones hungrily eyeing tourists today may have done the same to the earliest Europeans in Serengeti.

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