Crocodiles: Here Be Dragons.

• Author: Rothenberg, Robert S.

Nature documentaries often can be cruel in dispassionately witnessing what goes on in the animal kingdom, and this video is no exception. Watching the crocodiles in Tanzania's Serengeti National Park - weighing as much as a ton and running up to 16' long - lurking beneath the surface of the Grumeti River, just nostrils, ears, and eyes above water level, is chilling. Soon come the thundering hoofbeats of thousands of wildebeest on their annual migration across East and Central Africa, pausing to drink at the banks of the river. What ensues is a feeding frenzy as the fierce reptiles attack, capturing the wildebeest in their crushing jaws and dragging them beneath the surface. Meanwhile, the placid bovines, after momentarily shying away as one of the herd is snatched from their midst, return to the water like some obliging fast-food service, allowing the crocodiles to feast until sated. Since the reptiles' metabolism is so slow, it will not be...