An estimated 800 fatalities a year.

Can be found in Africa, North America and India.

Tigers generally attack from the back and look to bite the jugular or break the neck. Mountain lions stalk their prey and often attack from a vantage point. Presumably they then set about mauling the victim in a manner identical to that we've all seen in countless nature programs.

To avoid a heinous attack by a big cat, stare them in the eye and don't look away. To make yourself appear larger by opening your coat; they are unlikely to attack a larger animal, particularly in the case of a mountain lion. DO NOT turn and run - you may as well flash a neon sign asking to be attacked. They can outrun you in any case. Shout, scream and throw stones. If one has you, punch its nose and eyes.

The Felidae family includes the Lion, the Tiger, the Domestic Cats, and other felines as its members. They are the most strictly carnivorous mammals of the nine families in the order Carnivora. The first felids emerged during the Oligocene, about 30 million years ago. The most familiar feline is the Domestic Cat or House Cat (Felis catus), which first became associated with humans thousands of years ago. Its wild relative, the Wildcat, still lives in Europe, Africa and western Asia, although habitat destruction has restricted its range. Whether the Domestic Cat and the Wildcat should be classified as separate species remains controversial, but the most recent classification separates them.

Other well-known members of the feline family include big cats such as the Lion, the Tiger, the Leopard, the Jaguar, the Cougar, and the Cheetah, and other wild cats such as the Lynx, the Caracal, and the Bobcat. The extinct subfamily Machairodontinae, including the "saber-toothed cats" such as the well known Smilodon, were also true felines, in contrast to similar animals such as Thylacosmilus or Nimravidae.

There are 40 known species of felines in the world today which have all descended from a common ancestor of c. 10.8 million years ago. This species originated in Asia and spread across continents by crossing land bridges. As reported in the journal Science, testing of mitochondrial and nuclear DNA by Warren Johnson and Stephen O'Brien of the U.S. National Cancer Institute demonstrated that ancient cats evolved into eight main lineages that diverged in the course of at least 10 migrations (in both directions) from continent to continent via the Bering land bridge and Isthmus of Panama. The Panthera species are the oldest and the Felis species are the youngest. They estimated that 60 percent of the modern species of cats developed within the last million years. Most felids have a haploid number of 18 or 19. New world cats (those in Central and South America) have a haploid number of 18, possibly due to the combination of two smaller chromosomes into one larger chromosome.