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Common fat-tailed mouse opossum
Conservation status
Least Concern  (IUCN 3.1)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Infraclass:	Marsupialia
Order:	Didelphimorphia
Family:	Didelphidae
Genus:	Thylamys
Species:	T. pusillus
Binomial name
Thylamys pusillus (Desmarest, 1804)
Common fat-tailed mouse opossum range

The common fat-tailed mouse opossum (Thylamys pusillus) is a species of opossum in the family Didelphidae. It occurs in Argentina, Bolivia, and Paraguay in chaco and Andean foothill habitats. Its head-and-body length is about 75 to 120 (mean 94.3) mm, and its tail length is about 90 to 134 (mean 103.6) mm. Its dorsal fur is brownish gray, and its ventral fur is yellowish to white. The legs and cheeks are the same color as the ventral surface. Its tail is sharply bicolored (divided into two colors). A ring of faintly darker fur surrounds each eye. Its tail often lacks fat deposits, but does not always.

References

1. Gardner, A.L. (2005). "Order Didelphimorphia". In Wilson, D.E.; Reeder, D.M (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. p. 18. ISBN 978-0-8018-8221-0. OCLC 62265494.
2. ^ de la Sancha, N.; Teta, P.; Flores, D.; Albanese, M.S. (2015). "Thylamys pusillus". IUCN Red List of Threatened Species. 2015: e.T201936A22172657. doi:10.2305/IUCN.UK.2015-4.RLTS.T201936A22172657.en. Retrieved 12 November 2021.
3. Eisenberg, John Frederick; Redford, Kent Hubbard (1999). Mammals of the Neotropics: The Central Neotropics: Ecuador, Peru, Bolivia, Brazil. University of Chicago Press. p. 624. ISBN 978-0-226-19542-1.
4. Gardner, Alfred L. (2008). Mammals of South America: Marsupials, xenarthrans, shrews, and bats. University of Chicago Press. p. 669. ISBN 978-0-226-28240-4.

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• IUCN Red List least concern species
• Opossums
• Fauna of the Andes
• Marsupials of Argentina
• Marsupials of Bolivia
• Mammals of Uruguay
• Mammals described in 1804
• Taxa named by Anselme Gaëtan Desmarest
• Marsupial stubs