Last September I went on safari to Mara River in Northern Serengeti. I was lucky enough to see five crossings. Two times I saw crocodiles preying on wildebeests. On the first occassion a wildebeest was swiftly dealt with. On the second (pictured), believe it or not, the wildebeest survived after around 20 minutes of struggle. This was literally a battle between David and Goliath.