Lions ('Panthera Leo') are the second largest members of the feline family in the world, with only the tiger physically larger. They are found in the open savannah and desert areas of Africa, south of the Sahara Desert. A small population can also be found in the Gir National Park in northwest India. Until about 10,000 years ago, lions could also be found in North America. The Serval cat is distributed widely throughout Africa. They are most common in the open savannas, from lightly bushed country to forests, but particularly near marshy places or rivers. They also are found on high mountain moorlands. In the tall grass a Serval performs his signature style of pouncing up and down in pursuit of mice and other rodents. The Serval can supposedly hear the motion of a rodent as far as 20 feet away in the tall grasses of it's natural environment. Today only about 5,000-7,400 wild tigers live across Asia. The past and present ranges of the remaining five tiger subspecies are the northernmost living tiger, the Siberian tiger, lives primarily in southeastern Russia. The South China tiger occurs only in southern China. The range of the Indochinese tiger extends across most of Southeast Asia. The Bengal tiger is found primarily in India, while the Sumatran tiger is restricted to the Indonesian island of Sumatra. The Bali, Caspian, and Javan tigers have become extinct in the past 70 years. The leopard is the third largest cat of the Eastern Hemisphere. Only the tiger and lion are larger. Leopards live in Africa as far north as the Sahara, and in Asia from Turkey to Korea and Java.