Sumatran Tiger By jubaker Period: Dec 1, 1700 to Dec 31, 2014 Sumtran Tiger Dec 10, 1700 Discovered Sumatran Tiger is discovered Jan 1, 1930 3 Subspecies 3 Subspecies of the Sumatran Tiger are found. Jan 1, 1994 Largest population Jan 1, 2004 WWF WWF becomes involved in trying to protect the Sumatran Tigers Jan 1, 2012 3,200 left in the world Feb 28, 2012 Endangered Listed as endangered Jan 1, 2014 around 300 left