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WikiPedia: Hổ http://www.bforest.gov.bd/highlights.php http://www.britannica.com/EBchecked/topic/595456 http://www.britannica.com/eb/article-9072439/tiger http://www.dnaindia.com/report.asp?newsid=1180734&... http://www.enchantedlearning.com/subjects/mammals/... http://findarticles.com/p/articles/mi_qn4158/is_20... http://books.google.com/books?id=LvM-3i6z8iQC&pg=P... http://books.google.com/books?id=XFIbjBEQolMC&lpg=... http://www.indianjungles.com/090805d.htm http://www.rareearthexplorations.com/wildindia/tig...