The Sumatran tiger is a tiger subspecies whose original habitat on the island of Sumatra is one of six tiger subspecies that survive to date and is included in the critically endangered criterion of critically endangered species in the red list of endangered species released by the IUCN World Conservation Society. The wild population is estimated to be between 400-500, especially living in national parks in Sumatra. Recent genetic testing has revealed unique genetic markers, indicating that this subspecies may develop into separate species, when successfully sustained.
The destruction of habitat is the greatest threat to the current population. Logging continues even in national parks that should be protected. Recorded 66 Sumatran tigers were killed between 1998 and 2000.
