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Tigers in Crisis - Of the eight original subspecies of tigers, three have become extinct in the last 60 years, an average of one every 20 years. The number of tigers in the 1900′s –over 100,000 — dropped to 4,000 in the 1970′s. Today, they are a critically endangered species with the total of all the wild populations of the five remaining subspecies (Bengal tiger, Indochinese tiger, Siberian tiger, South China tiger, and Sumatran tiger) is an estimated 3,000 – 3,600 tigers.

Katten

tijgers http://tsjok45.wordpress.com/2012/11/17/katten/

Tiger genome sequenced: Tiger, lion and leopard genomes compared

Scientists have unraveled the first whole genome of a Amur tiger and compared it with the genomes of other big cats including the white Bengal tiger, lions, and snow leopards. Credit: © kyslynskyy / Fotolia