Secrets of The Animal World Tiger Significant reasons for population decrease consist of environment destruction, habitat fragmentation and poaching. Tigers once varied widely throughout Asia, from Turkey in the west to the eastern coast of Russia. The extent of area inhabited by tigers is approximated at less than 1,184,911 km2 (457,497 sq mi), a 41 % decrease from the area estimated in the mid-1990s. The species is categorized in the genus Panthera with the lion, leopard, snow and jaguar leopard. They are territorial and social but typically solitary animals, typically needing huge...