Sciuridae
Sciurus granatensis Humboldt, 1811
Sciurus granatensis Humboldt, 1811
Sciurus granatensis, the red-tailed squirrel, is a tree squirrel native from southern Central America to northern South America.
Sciurus stramineus Eydoux & Souleyet, 1841
Sciurus stramineus Eydoux & Souleyet, 1841
Sciurus stramineus, the Guayaquil squirrel, is a variable-colored tree squirrel native to western South America, with no recognized subspecies.
Sciurus pucheranii (Fitzinger, 1867)
Sciurus pucheranii (Fitzinger, 1867)
Sciurus pucheranii, the Andean squirrel, is a small tree squirrel found in Colombian Andean cloud and montane rain forests.
Sciurus ignitus (Gray, 1867)
Sciurus ignitus (Gray, 1867)
Sciurus ignitus, the Bolivian squirrel, is a moderately sized tree squirrel distributed along the eastern Andes from Peru to northern Argentina.
Sciurus spadiceus Olfers, 1818
Sciurus spadiceus Olfers, 1818
Sciurus spadiceus (southern Amazon red squirrel) is a large South American squirrel with three recognized subspecies.
Sciurus carolinensis Gmelin, 1788
Sciurus carolinensis Gmelin, 1788
Sciurus carolinensis, the eastern gray squirrel, is a widespread tree squirrel native to eastern North America with introduced invasive populations elsewhere.
Sciurus deppei Peters, 1863
Sciurus deppei Peters, 1863
Deppe's squirrel (Sciurus deppei) is a small Mesoamerican squirrel with stable populations and flexible habitat needs.
Sciurus yucatanensis J.A.Allen, 1877
Sciurus yucatanensis J.A.Allen, 1877
Sciurus yucatanensis, the Yucatan squirrel, is a larger squirrel with distinct fur and skull characteristics detailed here.
Sciurus variegatoides Ogilby, 1839
Sciurus variegatoides Ogilby, 1839
Sciurus variegatoides, the variegated squirrel, is a medium-sized diurnal tree squirrel native to Central America.
Sciurus aureogaster F.Cuvier, 1829
Sciurus aureogaster F.Cuvier, 1829
Sciurus aureogaster, the Mexican gray squirrel, is native to Mexico and southern Guatemala, introduced as invasive to Florida.
Sciurus colliaei Richardson, 1839
Sciurus colliaei Richardson, 1839
Collie's squirrel is a medium-sized gray squirrel native to western coastal Mexico that lives in dense tropical and subtropical vegetation.
Sciurus lis Temminck, 1844
Sciurus lis Temminck, 1844
Sciurus lis, the Japanese squirrel, is a Japan-endemic tree squirrel facing population decline from human forest fragmentation.
Sciurus vulgaris Linnaeus, 1758
Sciurus vulgaris Linnaeus, 1758
Sciurus vulgaris, the red squirrel, is a tree-dwelling squirrel found across Eurasia with characteristic ear tufts.
Sciurus anomalus Gmelin, 1778
Sciurus anomalus Gmelin, 1778
Caucasian squirrel (Sciurus anomalus) is a small native south-west Asian tree squirrel with three recognized subspecies.
Sciurus oculatus Peters, 1863
Sciurus oculatus Peters, 1863
Peters's squirrel (Sciurus oculatus) is a large endemic Mexican arboreal squirrel living in high elevation forests.
Sciurus alleni Nelson, 1898
Sciurus alleni Nelson, 1898
Allen's squirrel (Sciurus alleni) is an endemic tree squirrel of northern Mexico with no recognized subspecies.
Sciurus arizonensis Coues, 1867
Sciurus arizonensis Coues, 1867
Sciurus arizonensis, the Arizona gray squirrel, is a North American sciurid rodent facing local population declines from habitat loss and competition.
Sciurus niger Linnaeus, 1758
Sciurus niger Linnaeus, 1758
Sciurus niger (fox squirrel) is a large North American tree squirrel with specific habitat, behavior, and reproduction patterns.
Sciurus nayaritensis J.A.Allen, 1890
Sciurus nayaritensis J.A.Allen, 1890
The Mexican fox squirrel is a tree squirrel found in parts of Mexico and southeastern Arizona, US, rated Least Concern on the IUCN Red List.
Sciurus aestuans Linnaeus, 1766
Sciurus aestuans Linnaeus, 1766
Sciurus aestuans, the Brazilian/Guianan squirrel, is a dark brown South American tree squirrel endemic to the region.
Sciurus aberti Woodhouse, 1853
Sciurus aberti Woodhouse, 1853
Sciurus aberti (Abert's squirrel) is a diurnal pine-associated squirrel species native to western North America with distinctive long ear tufts.
Sciurus griseus Ord, 1818
Sciurus griseus Ord, 1818
Sciurus griseus, the western gray squirrel, is the largest native tree squirrel of the Pacific Northwest, currently threatened in parts of its range.
Microsciurus alfari (J.A.Allen, 1895)
Microsciurus alfari (J.A.Allen, 1895)
Microsciurus alfari, or Central American dwarf squirrel, is a Central and South American rainforest-dwelling squirrel species.
Microsciurus mimulus (Thomas, 1898)
Microsciurus mimulus (Thomas, 1898)
Microsciurus mimulus, the western dwarf squirrel, is a small tree squirrel found in Colombia, Ecuador, and Panama.
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