The Vietnam mouse-deer (Tragulus versicolor), also known as the silver-backed chevrotain, is a species of even-toed ungulate in the family Tragulidae that at present only is known from Vietnam. Until 2004, it was generally treated as a subspecies of the greater mouse-deer (T. napu), though it more closely resembles the lesser mouse-deer (T. kanchil). Recent records of this very poorly known species are missing, but this is more likely due to the difficulty involved in separating it from other mouse-deer and the general absence of field work within its presumed range than it being extinct. The silver-backed chevrotain is among the 25 “most wanted lost” species that are the focus of Global Wildlife Conservation's Search for Lost Species initiative.
- Wilson, D.E.; Reeder, D.M., eds. (2005). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. ISBN 978-0-8018-8221-0. OCLC 62265494.
- Timmins, R.J.; Duckworth, J.W. & Meijaard, E. (2008). "Tragulus versicolor". IUCN Red List of Threatened Species. Version 2008. International Union for Conservation of Nature. Retrieved 29 March 2009. Database entry includes a brief justification of why this species is of data deficient.
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- E. Meijaard, C.P. Groves (2004), "A taxonomic revision of the Tragulus mouse-deer (Artiodactyla)", Zoological Journal of the Linnean Society 140 (1), 63–102 doi:10.1111/j.1096-3642.2004.00091.x http://zmmu.msu.ru/rjt/articles/ther3_1%2009_13%20Kuznez_Borisenko.pdf
- "The Search for Lost Species". Global Wildlife Conservation. Retrieved 10 July 2017.