Safari operators often speak of the "Big Five." This is a linger-longer from the blood-sport days. The phrase does not identify Africa's largest species, but rather the five most difficult/dangerous animals to hunt on foot.
We pitched our duffels and then ourselves into Saidi's knobby-wheeled truck. Saidi found the gear and we lurched forward. Our aim was to encounter the wildness of East Africa, God-willing, in a bloodless way.