The Sumatran tiger, also known as Panthera tigris sumatrae, is a rare and critically endangered species of tiger native to the Indonesian island of Sumatra. It's one of the smallest tiger subspecies, and features distinctive dark black stripes on its orange fur. In terms of synonyms, the Sumatran tiger is often referred to as the Indonesian tiger or Sumatra's tiger. Other descriptive names include the island tiger, Indonesian striped tiger, and the Sumatran striped tiger. Regardless of the name, this majestic animal plays a vital role in the ecosystem of Sumatra, where it continues to face threats from habitat loss, poaching, and human-wildlife conflict.