The Andean leaf-eared mouse (Phyllotis andium) is a species of rodent in the family Cricetidae. It is found in Ecuador and Peru.
The Andean leaf-eared mouse lives at the highest elevation and has the highest elevation range of any known mammal, with populations found at elevations from sea level to mountain peaks of greater than 6700 meters.
References
Baillie, J. 1996. Phyllotis andium. 2006 IUCN Red List of Threatened Species. Downloaded on 9 July 2007. Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. 894–1531 in Mammal Species of the World a Taxonomic and Geographic Reference. D. E. Wilson and D. M. Reeder eds. Johns Hopkins University Press, Baltimore.