The cerrado mouse (Thalpomys cerradensis) is a rodent species from South America. It is found in the Cerrado of Brazil.
The cerrado mouse has a head-and-body length of more than 90 mm (3.5 in) and is larger than the only other species in the genus, the hairy-eared cerrado mouse (Thalpomys lasiotis). The fur is dense and rather stiff. The general colouring resembles some members of the Oligoryzomys genus. The dorsal pelage is reddish-brown, the individual hairs having blackish bases, orange central sections and blackish tips. There are also longer black guard hairs. The flanks and underparts are paler. The chin is buff and the eye-ring and cheeks orangish. The upper surfaces of the hindfeet are buff; they are small, with short outer toes and tiny claws. The tail, which is well-haired, is brown above and buff below. The diploid number is 36.
This mouse is restricted to the cerrado ecoregion in Brazil, occurring in the states of Bahia, Goiás and Mato Grosso. It inhabits open grassland, savannah with occasional trees and wetter grassland areas with palms. It readily recolonises areas affected by wildfires, and is at its most numerous less than two years later.
The cerrado mouse is most active soon after dusk and in the hours before dawn. In the state of Bahia, it is hardly ever caught in the live traps used by researchers for surveying small mammals, but its presence in the area is confirmed by its abundance in barn owl pellets (the undigested parts of their prey that the owls regurgitate).
This mouse has a wide range but a rather patchy distribution.The cerrado grassland in which it lives is increasingly being threatened by the expansion of industrial-scale farming, the burning of vegetation for charcoal and the development of dams to provide irrigation. Although populations of the mouse may be in general decline, the International Union for Conservation of Nature has assessed its conservation status as being of least concern because it believes the rate of population decline is not fast enough to justify placing it in a more threatened category.
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Oligoryzomys microtis, also known as the small-eared colilargo or small-eared pygmy rice rat, is a species of rodent in the genus Oligoryzomys of family Cricetidae. It is found in western Brazil, eastern Peru, Bolivia, and northern Paraguay.
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The hairy-eared cerrado mouse or hairy-eared akodont, is a rodent species from South America. It is found in the cerrado grassland of Brazil.
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Microryzomys altissimus, also known as the Páramo colilargo or highland small rice rat, is a species of rodent in the genus Microryzomys of family Cricetidae. It is found in Colombia, Ecuador, and Peru, but the Colombian segment may be a separate species.
Oligoryzomys destructor, also known as Tschudi's colilargo or the destructive pygmy rice rat, is a species of rodent in the genus Oligoryzomys of family Cricetidae. It is found along the eastern Andes from southern Colombia, through Ecuador, Peru, and Bolivia into northern Argentina. Its karyotype has 2n = 60 and FNa = 76.
Oligoryzomys magellanicus, also known as the Patagonian colilargo and the Magellanic pygmy rice rat, is a species of rodent in the genus Oligoryzomys of the family Cricetidae. It is found in the southernmost parts of Argentina and Chile, including Tierra del Fuego and other outlying islands. Its karyotype has 2n = 54 and FNa = 66.
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The little desert pocket mouse is a species of small rodent in the family Heteromyidae. It is endemic to Baja California in Mexico.
The southern pocket gopher is a species of rodent in the family Geomyidae. It is found in Mexico and the United States, usually in high altitude grassland and shrubland. It feeds on plant material and has an extensive burrow above which is a large heap of earth on the surface of the ground.
The Huanchaca mouse or Huanchaca akodont is a rodent species in the family Cricetidae. It is known from savannas in an area at an elevation of 700 metres (2,300 ft) in Serrania Huanchaca, Noel Kempff Mercado National Park in eastern Bolivia.
The cerrado climbing mouse or long-tailed rhipidomys is an arboreal rodent species in the family Cricetidae from South America. It is found in primary or secondary forests of the cerrado and caatinga in central and eastern Brazil, and has also been seen in the Atlantic Forest. Its karyotype is 2n = 44, FN = 48-52. They are nocturnal animals and can be found in both tree canopies and on the ground.
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