There are a couple of species that have included humans in their diets and do prey ocassionally upon them such as tigers, leopards, lions, and crocodilians, but also large constricting snakes, bears, wolves, sharks, among others. The most notorious man-eaters maybe are the Bengali tigers, though India's number one man-eater in history allegedly was the Champawat Tigress that had originally come from Nepal and killed a total of 436 people (200 in Nepal and 236 in India) before she could be hunted down and killed in 1911. Most of the lethal incidents in India that involve tigers do take place in Bengal and here specifically in the Sundarbans, a wild and beautiful marsh-land area bordering Bangladesh, assumably home to the largest still existing single tiger population in the world (numbering about 600). In India, between 50 and 250 people a year still lose their lives in the course of tiger attacks, but whereas in the past 50 to 60 people a year were killed by Royal Bengali Tigers in the Sunderbans alone, kill rates have dropped significantly due to improved management techniques that also involve habitat conservation and wildlife protection projects aiming to conserve a species that finds itself on the brink of extinction. Most tigers, very much unlike lions or leopards, or, for that case, crocodilians that, by the way, account for far more attacks and deaths of humans than any other species mentioned above ( Each year, hundreds of deadly Nil Crocodile attacks occur in Sub-Saharan Africa, but also the American crocodile in Central America and southern Mexico and the mugger crocodile in India are responsible for many deaths a year), tigers hardly ever specify on human flesh; quite on the contrary it seems that tigers resort to humans as a source of food only if there is no other prey available or if they are somehow incapacitated through illness, injury, or old-age. They also very rarely enter human settlements unlike some lions and leopards that have been reported to actively come into human villages to hunt; most tiger attacks happen in fact in defense, when humans enter tiger territories in search of food. Tigers attack in bright daylight, but lions will come at night. They are much bolder and more aggressive than tigers when it comes to hunt down humans, but, with some rare exceptions, it's also mostly old, sick, or starved specimen that attack humans. In Tanzania, where in a row of attacks between 1990 and 2005 at least 563 villagers were either severely injured or eaten by lions in the vicinity of National Park areas, conservation has directly contributed to the deaths of humans, some argue. Of course, human settlements pushing further and further every year into previously not or only sparsely inhabited areas is considered a major factor contributing to the problem of an increasing number of troublesome encounters between men and wildlife animals. This is true for most incidents involving big cats or crocodiles that happen to live close to heavily human-populated areas around the world but also for sharks (and related attacks) that see an increasing number of recreation seeking human invaders enter their natural habitat.