Sumatran Tiger, Indonesia.

Sumatran tiger is a subspecies of tiger found on the Indonesian island of Sumatra. The Sumatran tiger is the smallest of the tiger subspecies as compared to the Siberian tiger which is the largest.

Analysis of DNA is consistent with the hypothesis that the Sumatran Tigers have been isolated from other tiger populations after a rise in sea level at the Pleistocene to Holocene border (about 12,000-6,000 years ago). In agreement with this evolutionary history, the Sumatran Tiger is genetically isolated from all living mainland tigers, which form a distinct group, closely related among each other.