Smithsonian National Museum of Natural History, North American Mammals
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Megadontomys nelsoni

Nelson’s Big-toothed Deermouse

Order: Rodentia
Family: Cricetidae


Conservation Status: Endangered.

Nelson's Big-toothed Deermice live high on the eastern slopes of Mexico's Sierra Madre Oriental mountains. Big-toothed deermice are terrestrial and use runways to scurry through leaf litter on the forest floor. They are basically vegetarians; scientists examining their stomach contents found evidence that they ate berries.

Also known as:
Nelson’s Deermouse

Range: Total length: 300-351 mm; Tail 150-185 mm


Merriam, C.H., 1898. Proceedings of the Biological Society of Washington, 12:116.


Mammal Species of the World

Distribution of Megadontomys nelsoni