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Bengal tigers : ウィキペディア英語版
Bengal tiger

The Bengal tiger, also called the Royal Bengal tiger (''Panthera tigris tigris''), is the most numerous tiger subspecies. It is the national animal of both India and Bangladesh.〔Lytton, E. (1841). (The Critical and Miscellaneous Writings of Sir Edward Lytton, Vol. 2, page 167 )〕 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 has been classified as endangered by the IUCN.
As of 2010, Bengal tiger populations in India have been estimated at 1,706–1,909.〔Jhala, Y. V., Qureshi, Q., Sinha, P. R. (Eds.) (2011). (''Status of tigers, co-predators and prey in India, 2010.'' ) National Tiger Conservation Authority, Govt. of India, New Delhi, and Wildlife Institute of India, Dehradun. TR 2011/003 pp-302〕 As of 2014, they had reputedly increased to an estimated 2,226 individuals,〔Mohan, V. (2015). (India's tiger population increases by 30% in past three years; country now has 2,226 tigers ). ''The Times of India'', Delhi.〕 but the method used in the census may not be accurate.〔University of Oxford. (2015). ("Flawed method puts tiger rise in doubt, calls for new approach." ) ScienceDaily, 23 February 2015〕
Bengal tigers number around 440 in Bangladesh and 163–253 in Nepal.〔Global Tiger Initiative. (2011). (''Global Tiger Recovery Program 2010–2022'' ). Global Tiger Initiative Secretariat, Washington.〕〔Sangay, T., Wangchuk, T. (2005). ''Tiger Action Plan for Bhutan 2006–2015''. Nature Conservation Division, Department of Forests, Ministry of Agriculture, Royal Government of Bhutan and WWF Bhutan Programme, Thimphu.〕 There were previously 67–81 individuals in Bhutan. However, the latest census estimated that 103 wild Bengal tigers are living in the country.
Bengal is traditionally fixed as the typical locality for the binomen ''Panthera tigris'', to which the British taxonomist Reginald Innes Pocock subordinated the Bengal tiger in 1929 under the trinomen ''Panthera tigris tigris''.〔
==Characteristics==

The Bengal tiger's coat is yellow to light orange, with stripes ranging from dark brown to black; the belly and the interior parts of the limbs are white, and the tail is orange with black rings.
The white tiger is a recessive mutant of the Bengal tiger, which is reported in the wild from time to time in Assam, Bengal, Bihar and especially from the former State of Rewa. However, it is not to be mistaken as an occurrence of albinism. In fact, there is only one fully authenticated case of a true albino tiger, and none of black tigers, with the possible exception of one dead specimen examined in Chittagong in 1846.〔McDougal, C. (1977). ''The Face of the Tiger''. Rivington Books and André Deutsch, London.〕
Male Bengal tigers have an average total length of including the tail, while females measure on average. The tail is typically long, and on average, tigers are in height at the shoulders. The weight of males ranges from , while that of the females ranges from .〔
The smallest recorded weights for Bengal tigers are from the Bangladesh Sundarbans, where adult females are . Bengal tigers have exceptionally stout teeth, and the canines are the longest among all living felids; measuring from in length.〔

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