I’m not so sure about ‘Pot luck’, but I was lucky enough to spot all the Big 5 in my recent trip to East Africa. Big Five is a very common term used in most tourist and wildlife guides that discuss African wildlife safaris/game drives.
Black rhinoceros ~ The Muscular
The term Big Five was given by the hunters and refers to the five most difficult animals in Africa to hunt on foot. The Big Five were chosen for the difficulty in hunting them and the degree of danger involved, rather than their size. The collection consists of the lion, African elephant, Cape buffalo, leopard, and rhinoceros.