The salt marsh harvest mouse, also known as the red-bellied harvest mouse, is an endangered rodent endemic to the San Francisco Bay Area salt marshes in California. The two distinct subspecies are both endangered and listed together on federal and state endangered-species lists. The northern subspecies is lighter in color and inhabits the northern marshes of the bay, and the southern subspecies lives in the East and South Bay marshes. They are both quite similar in appearance to their congener species, the Western harvest mouse, R. megalotis, to which they are not closely related. Genetic studies of the northern subspecies have revealed that the salt marsh harvest mouse is most closely related to the plains harvest mouse, R. montanus, which occurs now in the Midwest. Its endangered designation is due to its limited range, historic decline in population and continuing threat of habitat loss due to development encroachment at the perimeter of San Francisco Bay.
The Tehuantepec jackrabbit is a jackrabbit endemic to Mexico.
The São Tomé shrew is a white-toothed shrew about 3.0 in (7.6 cm) long found only on São Tomé Island, São Tomé and Príncipe. It is listed as a critically endangered species due to habitat loss and a restricted range. It was discovered in 1886. The population continues to decrease, making these animals rare. It is found only on São Tomé Island, a small island that is actually a shield volcano that rises out of the Atlantic Ocean.
The greater guinea pig is a species of rodent found in the coastal strip of Brazil and Uruguay, where it lives in moist grassland and marshes.
Holochilus brasiliensis, also known as the Brazilian marsh rat or web-footed marsh rat, is a species of semiaquatic rodent from South America. It is found in northeastern Argentina, southern and eastern Brazil and in eastern Uruguay.
The aquatic rat, Ecuador fish-eating rat, fish-eating rat or Ecuadoran ichthyomyine is a South American species of semiaquatic rodent in the family Cricetidae. It is the only species in the genus Anotomys. This species is currently considered endangered. It is thought to be nocturnal and feeds on aquatic arthropods and insects. It is found in small ranges along the Andes.
The Mount Oku hylomyscus is a species of rodent in the family Muridae. Found only on Mount Oku, Cameroon, in tropical Central Africa, its natural habitat is tropical moist montane forests. It has a very small range and is threatened by habitat destruction, so the International Union for Conservation of Nature has rated its conservation status as being "critically endangered".
Mittendorf's lemniscomys or Mittendorf's striped grass mouse is a species of rodent in the family Muridae. It is endemic to Cameroon where it is found at high elevations on a single mountain. Its natural habitat is tropical high-altitude grassland. It faces no particular threats and the International Union for Conservation of Nature has listed it as being of "least concern".
The Ethiopian amphibious rat also known as the Ethiopian water mouse is an insectivorous and semiaquatic species of rodent in the monotypic genus Nilopegamys of the family Muridae. There has only been one known specimen. It was found along the Lesser Abay River near its source at an altitude of 2600 m in the highlands of northwestern Ethiopia in 1928. N. plumbeus is considered to be the most aquatically adapted African murid; its unusually large brain is thought to be one consequence of this lifestyle. The species is considered to be critically endangered or possibly extinct, since its habitat has been severely damaged by overgrazing and monoculture.
The Mexican deer mouse is a species of forest-dwelling rodent in the family Cricetidae. It is found in southern Mexico and throughout much of Central America.
Rheomys is a genus of Mexican and Central American semiaquatic rodents in the family Cricetidae.
Rheomys raptor, also known as the Goldman's water mouse or Goldman's Ichthyomyine, is a species of rodent in the family Cricetidae. This mouse is semiaquatic and its carnivorous diet includes invertebrates. The conservation status of the species is rated as "least concern" because of its sizable population and the presence of several protected areas within its range. However, deforestation and water pollution represent potential threats.
Thomas's water mouse is a species of rodent in the family Cricetidae found in El Salvador, Guatemala, and Mexico at altitudes of 400 to 2700 m. It lives near forest streams and is semiaquatic; its carnivorous diet includes both invertebrates and small vertebrates. The conservation status of the species is rated as "near threatened" because of the small size of its range and the threat of degradation of its habitat, including the water quality of the streams it lives along.
Underwood's water mouse is a species of rodent in the family Cricetidae. It is found in Costa Rican and western Panamanian cloud forest at altitudes from 1500 to 2000 m. This mouse lives near streams in highland forests and is semiaquatic; its carnivorous diet includes invertebrates. Although its range is small, it includes a number of protected areas, and the population appears to be sizable; the IUCN therefore rates the conservation status of the species as "least concern".
Scolomys melanops, also known as the short-nosed scolomys, South American spiny mouse, Ecuadorian spiny mouse, or gray spiny mouse, is a species of rodent in the genus Scolomys of family Cricetidae. It is a forest mouse and was thought to be endemic to Ecuador but it is now known to have a wider distribution, being also present in part of Peru.
Goldman's pocket mouse is a species of rodent in the family Heteromyidae. It is endemic to Mexico, where it is threatened by the increasing conversion of its dry, scrubby habitat into agricultural land. As a result, the International Union for Conservation of Nature has assessed its conservation status as being "near threatened".
The Chinese jumping mouse is a species of rodent in the family Dipodidae. It is monotypic within the genus Eozapus. It is endemic to China where its natural habitat is temperate forests, steppes and meadows in mountainous regions. It is tolerant of some degree of habitat destruction, and the International Union for Conservation of Nature has assessed its conservation status as being of "least concern".
The Mexican spiny pocket mouse is a species of rodent in the family Heteromyidae. It is native to Mexico and Texas in the United States where it is found in dry, scrubby habitats. The IUCN has assessed it as being of "least concern". It was formerly placed in the genus Liomys, which is now recognized to be paraphyletic and has been subsumed into Heteromys.
The Perote ground squirrel is a species of rodent in the family Sciuridae. It is endemic to Mexico and is currently at risk of extinction. Perote ground squirrels live within the same area as rock squirrels but they use different microhabitats. In one case it also shares its habitat with the Mexican ground squirrel. Perote ground squirrels have traits similar to those of spotted ground squirrels found in the northern Mexican Plateau; however they are larger, have shorter tails and yellow backs. Its skull is relatively narrow with a large braincase and they have heavy, thick teeth. Perote ground squirrels have two annual cycles, an active phase (March–November) and a hibernation phase (December–February). Some overlap may occur in March and November however.
Water mouse can refer to several types of not closely related semiaquatic rodents of superfamily Muroidea:
