The Bengal tiger (Panthera tigris tigris) is the most numerous of the tiger subspecies. By 2011, the total population was estimated at fewer than 2,500 individuals with a decreasing trend. None of the Tiger Conservation Landscapes within the Bengal tiger’s range is considered large enough to support an effective population size of 250 adult individuals. Since 2010, it is listed as Endangered on the IUCN Red List.An example of charismatic megafauna, the Bengal tiger is the most familiar tiger subspecies, as well as the largest in the wilderness,ranking with the Caspian and Siberian tigers among the biggest cats that ever lived.
By 2010, tiger populations in India were estimated at 1,706–1,909. As of 2014, they had reputedly increased to an estimated 2,226 individuals. Tigers number around 440 in Bangladesh and 163–253 in Nepal. Prior censuses placed the tiger population in Bhutan at around 65–75 individuals. In 2015, it was estimated that 103 Bengal tigers were living in that country. The tiger is the national animal of both India and Bangladesh.