The endless plain of Serengeti is filled with wildlife.  After spending a few days camping in the national park, we saw everything from gazelles to cheetah.  One of my personal favorites was witnessing a pride of lions tearing into their kill.  We were about 10 feet away from the scene, where the lioness were fighting over the last piece of the zebra, leaving nothing behind but the rib cage.  Nothing is more primal than watching one animal tear into another.