The southern red-sided opossum (''Monodelphis sorex'') is an

opossum Opossums () are members of the marsupial order Didelphimorphia () endemic to the Americas. The largest order of marsupials in the Western Hemisphere, it comprises 93 species in 18 genera. Opossums originated in South America and entered North ...

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

from

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southe ...

. It is found in

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

and

Paraguay Paraguay (; ), officially the Republic of Paraguay ( es, República del Paraguay, links=no; gn, Tavakuairetã Paraguái, links=si), is a landlocked country in South America. It is bordered by Argentina to the south and southwest, Brazil to th ...

. This opossum has small rounded ears, a long pointed nose and a tail which is half as long as its body. The head, neck and foreparts are grey, the back is dark brown and the rump is reddish. It has short fur and the males are larger than the females. It is terrestrial and mainly feeds on insects, although it will also eat small vertebrates and fruit. Unlike most marsupials, the female has no pouch for the developing young. They cling to the mother's nipples and when they are older, ride on her back and flanks. It is also called the shrewish short-tailed opossum, or dwarf short-tailed opossum.''http://www.knowyoursto.com/didelphidae/monodelphis.html#monodelphis_sorex''

References

Opossums Marsupials of South America Mammals of Brazil Fauna of the Atlantic Forest Mammals described in 1872 Taxobox binomials not recognized by IUCN {{marsupial-stub