Six different sub-species of tigers exist on Thursday, scientists confirmed Thursday, amid hopes the findings will boost efforts to save the fewer than 4,000 free-range big cats that remain in the world.
The six include the Bengal tiger, Amur tiger, South China tiger, Sumatran tiger, Indochinese tiger and Malayan tiger, said the report in the journal Current Biology. Three other tiger subspecies have already gone extinct: the Caspian, Javan and Bali tigers. Key threats to tigers’ survival include habitat loss and poaching. How to best conserve the species and encourage both captive and wild breeding has been a matter of debate among scientists, in part because of divisions over how many tiger sub-species exist. Some say there are two types, and others believe there are five or six.
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