Sumatran Tigers Went Extinct, Learn About Their Uniquenessbr br Panthera tigris sondaica, or Sumatran tigers, are a subspecies of Panthera tigrisbr Sumatran tigers inhabit the island of Sumatra, Indonesiabr Sumatran tiger is the tiger that has the smallest sizebr Adult male Sumatran tigers measure 92 inches from head to toe, or about 250 cm, and weigh 300 pounds, or approximately 140 kgbr the height of a male tiger can reach 60 cmbr The female is on average 78 inches long or about 198 cm long and weighs 200 pounds or about 91 kgbr The IUCN World Conservation Agency's red list of severely endangered species includes Sumatran tigersbr The natural population is estimated to number between 400 and 500 individuals, with the majority of them residing in the Bukit Barisan Mountainsbr A record 66 Sumatran tigers were killed between 1998 and 2000br