Enggano rat

The Enggano rat, which the Wikipedia article also calls the Enggano Island rat, is a rodent of the family Muridae with the scientific name Rattus enganus. It is found only on Enggano Island, an island that belongs to Indonesia, so its whole recorded range is a single island. The Wikipedia article describes it as critically endangered and says it has not been collected in more than a century, so it is very possibly extinct, while the Global Biodiversity Information Facility record of the IUCN Red List category lists it as data deficient. That disagreement is the heart of its entry: a species can stay on a conservation list long after the last specimen was taken, and showing that none survive is much harder than failing to find one. The source article is short and rests on the Mammal Species of the World treatment of the superfamily Muroidea, so little more about its appearance or habits is established in the pages read for this entry.