The Thylacine became extinct on the Australian mainland thousands of years before European settlement of the continent, but survived on the island of Tasmania along with a number of other endemic species such as the Tasmanian Devil. Intensive hunting encouraged by bounties is generally blamed for its extinction, but other contributory factors may have been disease, the introduction of dogs, and human encroachment into its habitat. Despite being officially classified as extinct, sightings are still reported. Like the tigers and wolves of the Northern Hemisphere, from which it inherited two of its common names, the Thylacine was a top-level predator. As a marsupial, it was not related to these placental mammals, but due to convergent evolution it displayed the same general form and adaptations. Its closest living relative is the Tasmanian Devil.

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