The leopard is the smallest of the four "big cats" in the genus Panthera, the other three being the tiger, lion and jaguar. Once distributed across southern Asia and Africa, the leopard's is now concentrated mainly in sub-Saharan Africa. Due to the loss of range and declines in population, it is graded as a "Near Threatened" species. The leopard is similar in appearance to the jaguar, although it is of smaller and slighter build. The species' success in the wild owes in part to its opportunistic hunting behaviour, its adaptability to habitats, its ability to run at speeds approaching 58 kilometres per hour (36 mph), its unequalled ability to climb trees even when carrying a heavy carcass, and its notorious ability for stealth.
The name kestrel refers to several different members of the falcon family. Kestrels are most easily distinguished by their typical hunting behaviour: they hover at a height of around 10–20 metres (33–66 ft) over open country and swoop down on prey, usually small mammals, lizards or large insects. Other falcons are more adapted to active hunting on the wing. In addition, kestrels are notable for usually having much brown in their plumage. Kestrels are bold and have adapted well to human encroachment, nesting in buildings and hunting by major roads.