The Big 5 comprises:-
Elephant
Rhino
Buffalo
Lion
Leopard
African bush elephant (Loxodonta africana)
The African elephant (Loxodonta africana) is a very large herbivore having thick, almost hairless skin, a long, flexible, prehensile trunk, upper incisors forming long curved tusks of ivory, and large, fan-shaped ears. There are two distinct species of African elephant: African forest elephant (Loxodonta cyclotis) and the African bush elephant (Loxodonta africana). Elephants are difficult to hunt because despite their large size, they are able to hide in tall grass and are more likely to charge than the other species.
Black rhinoceros (Diceros bicornis)
The black rhinoceros (Diceros bicornis) is a large, thick-skinned herbivore having one or two upright horns on the nasal bridge. Rhinoceros may refer to either black or white rhinoceros. Among big five game hunters, the black rhinoceros is preferred, although it is now critically endangered.
African Cape buffalo (Syncerus caffer)
The African or Cape buffalo (Syncerus caffer) is a large horned bovid. Buffalo are sometimes reported to kill more hunters in Africa than any other animal. A similar claim is also made of hippos and crocodiles, but these statements include all people and not strictly hunters. The Cape Buffalo is considered by many to be the most dangerous of the big five, reportedly causing the most hunter deaths, with wounded animals reported to ambush and attack pursuers.
Lion (Panthera leo)
The lion (Panthera leo) is a large carnivorous feline of Africa and northwest India, having a short, tawny coat, a tufted tail, and, in the male, a heavy mane around the neck and shoulders. Lions are desirable to hunters because of the very real danger involved. A lion may attack without provocation, and is considered by many to be the best of the big five.
Leopard (Panthera pardus)
The leopard (Panthera pardus) is a large, carnivorous feline having either tawny fur with dark rosette-like markings or black fur. Of the big five, it is most difficult to acquire hunting licenses for leopards. The leopard is considered the most difficult of the big five to hunt because of their nocturnal and secretive nature. They are wary of humans and will take flight in the face of danger. The leopard is solitary by nature, and is most active between sunset and sunrise, although it may hunt during the day in some areas. Leopards can be found in the savanna grasslands, brush land and forested areas in Africa.
Conservation status
The African lion and the African bush elephant are both classified as vulnerable. The African leopard and the white rhinoceros are both classified as near threatened. The black rhinoceros and northern white rhinoceros are both classified as critically endangered so hunting them is greatly restricted. The African buffalo is the most popular big five game animal to hunt, as its conservation status is least concern, but it is experiencing a population decline in uncontrolled areas due to poaching and urbanization.
(Wikipedia)