A cotton rat is any member of the rodent genus Sigmodon. Their name derives from their damaging effects on cotton as well as other plantation crops, such as sugarcane, corn, peanut and rice. Cotton rats have small ears and dark coats, and are found in North and South America. Members of this genus are distributed in the Southwestern United States, Mexico, Central America, and South American countries of: Venezuela, Ecuador, Colombia, Peru, Brazil, Guyana, and Suriname. Many of the species are found in Mexico.
Oligoryzomys nigripes, also known as the black-footed colilargo or the black-footed pygmy rice rat, is a rodent in the genus Oligoryzomys of family Cricetidae. Oligoryzomys nigripes is a species that has been further divided into different sister taxa throughout history. It is found in different countries in South America. It is a large species with long ears, dark yellow to dark brown upperparts, sharply delimited from the whitish underparts, and often a pink girdle on the chest. This species of rat spends much of its life among the trees. The karyotype is 2n = 62, FNa = 78–82.
The squirrel-toothed rat, also known as the New Guinea giant rat, powerful-toothed rat, uneven-toothed rat, or narrow-toothed giant rat, is a species of rodent in the family Muridae. It is the only species in the genus Anisomys and is found in New Guinea.
Carpomys is a genus of rodent in the family Muridae. It contains two extant species, and one extinct species:
The giant bushy-tailed cloud rat or Luzon bushy-tailed cloud rat is a large, endangered species of rodent in the family Muridae. It is only found in pine and mossy forest at altitudes of 2,000–2,740 metres (6,560–8,990 ft) in the Central Cordillera of Luzon, the Philippines. Relatively little is known about its behavior, but it is nocturnal, mainly arboreal and feeds on various types of vegetation.
The Ryukyu long-tailed giant rat or Ryukyu rat is a species of rodent in the family Muridae. It is the only extant species in the genus Diplothrix. It is found only in the Ryukyu Islands of Japan. Its natural habitat is temperate forests.
Sody's tree rat is a rodent species in the family Muridae that has been recorded only in bamboo forest in Gunung Gede Pangrango National Park, West Java, Indonesia. It was first recorded during surveys carried out between 1933 and 1935 at an altitude of 1,000 m (3,300 ft). It is dark brown and has yellow to ochre spots. Its tail is uniform brown. Its head-to-body length ranges from 18 to 21 cm with a 27 to 30.5 cm long tail. Its long feet indicate that it is adapted to living in trees.
The gray tree rat is a species of rodent in the family Muridae. only species in the genus Lenothrix. It is found in forests in Indonesia and Malaysia. A common species, the IUCN has rated it as being of "least concern".
Niviventer is a genus of rodent in the family Muridae endemic to Southeast Asia. It contains the following species:
The dark-tailed tree rat or Sundaic arboreal niviventer is a species of rodent in the family Muridae. It is found on the Malay Peninsula, including some offshore islands, and in parts of the Malay Archipelago. It might be a species complex.
The southern giant slender-tailed cloud rat or southern Luzon giant cloud rat, also known as bugkon in Filipino, is a vulnerable species of rodent in the family Muridae, found only in southern Luzon in the Philippines. It is dark brown, occasionally with some reddish, but lacking the light-coloured sections usually seen in its close relative, the northern Luzon giant cloud rat. The southern giant slender-tailed cloud rat is a large rodent that has a total length of about 67–75 cm (26–30 in) and weighs 1.45–2.1 kg (3.2–4.6 lb).
Pithecheir is a genus of rodent in the family Muridae endemic to Southeast Asia. It contains the following species:
Pogonomys is a genus of rodent in the family Muridae, found in New Guinea and the D'Entrecasteaux Islands, with one species being found also in Australia.
The Malayan field rat, Malaysian field rat or Malaysian wood rat, is a species of rodent in the family Muridae. It is nocturnal and mainly arboreal and is found in Malaysia, Thailand, Indonesia and the Philippines. It is a common species and the International Union for Conservation of Nature has assessed it as being of "least concern".
The black-tailed tree rat, also called black-tailed acacia rat or black-tailed thallomys,, is a species of rodent in the family Muridae. It is found in Angola, Botswana, Namibia and South Africa, where its natural habitat is subtropical or tropical dry shrubland. It is both nocturnal and arboreal and makes bulky nests in the trees, often acacias, where it feeds on leaves and buds.
The acacia rat, or black-tailed tree rat, is a species of rodent in the family Muridae. It is a small arboreal rodent that is extensively dependent on Acacia trees. It is found in Botswana, Democratic Republic of the Congo, Ethiopia, Kenya, Malawi, Mozambique, Namibia, Somalia, South Africa, Eswatini, Tanzania, Zambia, and Zimbabwe. Its natural habitat is subtropical or tropical dry shrubland.
The Magdalena rat is a species of rodent in the family Cricetidae which is found only in a small region of western Mexico.
The mimic tree rat, rock-dwelling giant rat, or rock-dwelling rat is a species of rodent in the family Muridae found in West Papua, Indonesia and Papua New Guinea.
The king rat, or rat king, is a large species of rodent in the family Muridae. It is endemic to the island of Guadalcanal in the Solomon Islands. Like the two other species of rodent in Guadalcanal, it is placed in the genus Uromys. It lives in trees and is larger than Uromys porculus but smaller than Uromys imperator.
Grandidier's tufted-tailed rat is a species of rodent from the family Nesomyidae. Morphological evidence suggests that Grandidier's tufted-tailed rat is most closely related to Petter's tufted-tailed rat, E. petteri. However, Grandidier's tufted-tailed rat is the smaller of the two species.
