The Old World rats and mice, part of the subfamily Murinae in the family Muridae, comprise at least 519 species. Members of this subfamily are called murines. In terms of species richness, this subfamily is larger than all mammal families except the Cricetidae and Muridae, and is larger than all mammal orders except the bats and the remainder of the rodents.
African vlei rats (Otomys), also known as groove-toothed rats, live in many areas of sub-Saharan Africa. Most species live in marshlands, grasslands, and similar habitats and feed on the vegetation of such areas, occasionally supplementing it with roots and seeds. The name "vlei" refers to the South African term for intermittent, seasonal, or perennial bodies of standing water.
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.
The Manipur white-toothed rat is a species of rodent in the family Muridae.
The lesser small-toothed rat or western small-toothed rat is a species of rodent in the family Muridae. It is found only in West Papua, Indonesia.
Macruromys is a genus of rodent in the family Muridae endemic to New Guinea. It contains the following species:
The African groove-toothed rat or mill rat is a species of rodent in the family Muridae found in Angola, Cameroon, the Central African Republic, the Republic of the Congo, the Democratic Republic of the Congo, Ivory Coast, Ghana, Guinea, Kenya, Liberia, Malawi, Rwanda, Tanzania, and Uganda. Its natural habitats are subtropical or tropical moist lowland forest and subtropical or tropical seasonally wet or flooded lowland grassland. It is threatened by habitat loss.
Mylomys is a genus of rodent in the family Muridae. It contains the following species:
The bell groove-toothed swamp rat is a species of rodent in the family Muridae found in Angola and the Democratic Republic of the Congo. Its natural habitats are moist savanna, subtropical or tropical dry lowland grassland, arable land, and rural gardens.
The creek groove-toothed swamp rat is a species of rodent in the family Muridae. It is found in Angola, Burundi, Democratic Republic of the Congo, Kenya, Malawi, Mozambique, Namibia, Rwanda, Tanzania, Uganda, Zambia, and Zimbabwe. Its natural habitats are moist savanna and pastureland.
Hopkins's groove-toothed swamp rat is a species of rodent in the family Muridae. It is found in Kenya, Rwanda, Uganda, possibly Burundi, and possibly Tanzania. Its natural habitat is swamps. It is threatened by habitat loss.
Issel's groove-toothed swamp rat is a species of rodent in the family Muridae. It is found only in Uganda. Its natural habitats are arable land and rural gardens. It is threatened by habitat loss.
The least groove-toothed swamp rat is a species of rodent in the family Muridae. It is found in Angola, Democratic Republic of the Congo, Tanzania, and Zambia. Its natural habitat is moist savanna.
Reithrodon is a genus of rodent in the family Cricetidae. It contains the following living species:
Scapteromys is a genus of South American rodents in the tribe Akodontini of family Cricetidae. Three species are known, found in northern Argentina, southern Brazil, Paraguay and Uruguay. They are as follows:
Arvicanthini is a tribe of muroid rodents in the subfamily Murinae. Almost all recent species in this tribe are or were found in Africa aside from one species, the Indian bush rat, which is found in South Asia and Iran. However, some fossil Golunda species from India and the genus Parapelomys are thought to have also occurred outside Africa, and one species in the fossil genus Saidomys may have also occurred in Afghanistan.
