The 'Big Five' — lion, leopard, elephant, buffalo and rhino — was coined by colonial-era big-game hunters to rank the five animals most dangerous to hunt on foot, not the five most impressive to see, which is worth knowing since it shapes expectations oddly. The more recently popularized 'Big Nine' adds cheetah, giraffe, zebra and the hippopotamus, reflecting what travelers actually rank among their most memorable sightings rather than a hunting-era ranking. Practically, the Big Nine is far easier to complete on a single well-planned safari than the original Five — giraffe, zebra and hippo are abundant across nearly every park in Kenya, Tanzania and Uganda, and cheetah, while less common than lion, is a realistic sighting in open-plains habitat like the Serengeti's Ndutu area or the Mara's grasslands, where their hunting style depends on exactly the visibility those plains provide. We find most first-time travelers arrive fixated on the original Five as a checklist and leave far more moved by a cheetah hunt, a hippo pod's chaos at a waterhole, or a giraffe silhouetted against a sunset than by ticking off a rhino from 200 meters — worth recalibrating expectations toward before you travel, not after.