Roosevelt's Barking Deer is a subspecies of the Barking Deer, and was proposed as a separate species by the Field Museum in 1929 on a hunting expedition led by Theodore (JNR) and Kermit Roosevelt. The specimen provided by the museum was slightly larger than the common small muntjac, and DNA testing showed that it was distinct from the recently discovered muntjac species. There have been several claims of rediscovery of this species, including a skull owned by villagers in the mountains of Truong Son (Annamite) between Laos and Vietnam. It is a subspecies of the FEA muntjac, whose range further northwest is separated from the mountains by lower lands. However, without further evidence, the exact location of Roosevelt's muntjac cannot be determined.
Listed in the International Red List of the World Conservation Union (IUCN), 2009 List ver 3.1 - Data Deficient (DD).
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