The Eastern gray squirrel (Sciurus carolinensis) is a tree squirrel native to eastern North America; there it is the most prodigious and ecologically essential natural forest regenerator. Widely introduced to certain places around the world, the...
The Red squirrel (Sciurus vulgaris) is a species of tree squirrel in the genus Sciurus common throughout Europe and Asia. It lives in trees and its long tail helps the squirrel to balance and steer when jumping from tree to tree and running along...
The Eastern fox squirrel (Sciurus niger) is the largest species of tree squirrel native to North America. Despite the differences in size and coloration, it is sometimes mistaken for American red squirrels or Eastern gray squirrels in areas where...
The western gray squirrel (Sciurus griseus ) is an arboreal rodent found along the western coast of the United States and Mexico. It is a tree squirrel.In some places, this species has also been known as the silver-gray squirrel, the California gray...
Abert's squirrel (Sciurus aberti) is a tree squirrel native to North America. It lives in pine forests and favors the seeds and cones of the Mexican pinyon and the ponderosa pine. It is named in honor of the American naturalist John James Abert.
The Japanese squirrel (Sciurus lis ) is a tree squirrel in the genus Sciurus endemic to Japan. It was described by Dutch zoologist Coenraad Jacob Temminck in 1844. The Japanese squirrel's range includes the islands of Honshū, Shikoku, and Kyūshū....
The Kaibab squirrel (Sciurus aberti kaibabensis) is an elusive isolated tassel-eared squirrel that lives in the Kaibab Plateau. It is now considered a subspecies of the Abert's squirrel (Sciurus aberti). This squirrel is not found anywhere else in...
Sherman's fox squirrel (Sciurus niger shermani ) is a subspecies of the fox squirrel. It lives in the US states of Florida and Georgia in fire-prone areas of longleaf pine and wiregrass, especially around sandhills. A tree squirrel, the Sherman's...
The Delmarva fox squirrel (Sciurus niger cinereus ) is a formerly endangered subspecies of the fox squirrel. It is native to the eastern United States. The Delmarva fox squirrel was removed from the endangered species list in November 2015.
The variegated squirrel (Sciurus variegatoides ) is a tree squirrel in the genus Sciurus found in Costa Rica, El Salvador, Guatemala, Honduras, southern Mexico, Nicaragua, and Panama. Fifteen subspecies are recognised. It is a common squirrel and...
The Mexican gray squirrel (or red-bellied squirrel) (Sciurus aureogaster ) is a tree squirrel in the genus Sciurus native to Guatemala and eastern and southern Mexico. It has been introduced to the Florida Keys.The alternate name should not be...
The Caucasian squirrel (Sciurus anomalus ) or Persian squirrel, is a tree squirrel in the genus Sciurus found in temperate broadleaf and mixed forests in south-western Asia.The species is usually said to have first been described in 1778 by Johann...
The Arizona gray squirrel (Sciurus arizonensis ) is a tree squirrel, in the genus Sciurus, endemic to the canyons and valleys surrounded by deciduous and mixed forests in eastern Arizona and northern Mexico.It is threatened by habitat loss. The only...
The red-tailed squirrel (Sciurus granatensis ) is a species of tree squirrel distributed from southern Central America to northern South America.
The Calabrian black squirrel (Sciurus meridionalis ) is a species of tree squirrel in the genus Sciurus, endemic to the forests of the regions of Calabria and Basilicata, in the south of the Italian Peninsula.
The southern Amazon red squirrel (Sciurus spadiceus ), is a squirrel species from South America where it inhabits forests in much of north-western South America east of the Andes. Three subspecies are currently recognised. It is a dark red colour,...
The Brazilian squirrel (or Guianan squirrel) (Sciurus aestuans ) is a tree squirrel in the genus Sciurus endemic to South America. It is found in South-eastern Colombia, Brazil, Guyana, French Guiana, Suriname and Venezuela.It is a dark brown...
The Mexican fox squirrel (Sciurus nayaritensis) is a species of tree squirrel found throughout the Sierra Madre Occidental of Mexico as far south as Jalisco — and northward into the Chiricahua Mountains of southeastern Arizona, U.S.This species, or...
Deppe's squirrel (Sciurus deppei ) is a species of tree squirrel in the genus Sciurus native to Belize, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, and Nicaragua.
The Andean squirrel (Sciurus pucheranii ) is a tree squirrel endemic to Colombia where it inhabits montane rain forest and cloud forests of the Cordillera Occidental and Cordillera Central ranges of the Colombian Andes, at elevations between 2,000...
Allen's squirrel (Sciurus alleni ) is a tree squirrel in the genus Sciurus endemic to northern Mexico. It has no subspecies.
The Yucatan squirrel (, Sciurus yucatanensis ), originally named the Yucatan gray squirrel, also once named the Campeche squirrel, is a tree squirrel in the genus Sciurus found in the Yucatán Peninsula and adjacent areas. It is native to northern...
The Guayaquil squirrel (Sciurus stramineus ) is a tree squirrel endemic to Ecuador and Peru. It is a robust squirrel with a head-and-body length of 18 to 32 cm (7 to 13 in) and a similar length tail. The colour is variable; in Peru, a pale morph is...
The northern Amazon red squirrel, Sciurus igniventris, is a squirrel species from South America. It occurs in Brazil, Colombia, Ecuador, Peru and Venezuela.
The fiery squirrel (Sciurus flammifer ) is a rodent in the family Sciuridae. The taxon is endemic to the area south of the Orinoco River in the state of Bolívar, Venezuela.
Sciurus ingrami, usually called Ingram's squirrel in English, is a squirrel found in South America. It is known as serelepe in southeastern Brazil. It is found in the Atlantic Forest Biome of Brazil and Misiones Province, Argentina.It is regarded...
The Bolivian squirrel (Sciurus ignitus ) is a tree squirrel that is endemic to South America. Little is known of the species, which may represent a species complex.
Collie's squirrel (Sciurus colliaei ) is a tree squirrel in the genus Sciurus endemic to Mexico.
Peters's squirrel (Sciurus oculatus ) is a tree squirrel in the genus Sciurus endemic to Mexico. It was first described by the German naturalist and explorer Wilhelm Peters in 1863. Three subspecies are recognised. It is a common species, and the...
The yellow-throated squirrel (Sciurus gilvigularis ) is a tree squirrel in the genus Sciurus endemic to South America. It is found in Brazil, Guyana and Venezuela.
The Junín red squirrel (Sciurus pyrrhinus ) is a species of squirrel from Peru and Ecuador.
Richmond's squirrel (Sciurus richmondi ) is a poorly known tree squirrel in the genus Sciurus endemic to Nicaragua, which is likely a synonym of the red-tailed squirrel (Sciurus granatensis ). It is locally known as the ardilla del rama.
Sanborn's squirrel (Sciurus sanborni ) is or was a little known tree squirrel described in 1944 from the skin and skeleton of a single female specimen collected in Peru in 1941. Subsequently, over the proceeding years only a handful of either...
