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Chipmunks are classified as four genera: Tamias, of which the eastern chipmunk (T. striatus) is the only living member; Eutamias, of which the Siberian chipmunk (E. sibiricus) is the only living member; Nototamias, which consists of three extinct species, and Neotamias, which includes the 23 remaining, mostly western North American, species.
It has two fewer teeth than other chipmunks and four toes each on the front legs, but five toes on the hind legs. [16] The chipmunk's appearance "remains consistent throughout life. There is no external difference in appearance between the sexes except the obvious anatomical characteristics of the genitalia during periods of fertility.
Alpine chipmunks share the typical pattern of genus Neotamias, being gray-brown overall and featuring three white stripes on the cheeks and four down the back. The flanks are muted orange. They weigh 27-45 grams [5] and grow from 166 to 203 mm. Overall the alpine chipmunk is much paler and smaller compared to others in its genus. Their typical ...
Caged Tamias chipmunk, Tokyo area. The genus Tamias was formerly divided into three subgenera that, in sum, included all chipmunk species: Tamias, the eastern chipmunk and other fossil species; Eutamias, of which the Siberian chipmunk (E. sibiricus) is the only living member; and Neotamias, which includes the 23 remaining, mostly western ...
Typically the Siberian chipmunk has four white stripes and five dark stripes along the back. It is 18–25 cm (7.1–9.8 in) long, a third of which is the tail. The weight of adults depends on the time of year and food availability. [3] It exhibits slight variations in coloration in different geographic regions. [4]
Townsend's chipmunk (Neotamias townsendii) is a species of rodent in the squirrel family, Sciuridae. It lives in the forests of the Pacific Northwest of North America, from extreme southwestern British Columbia through western Washington and western Oregon. Townsend's chipmunk is named after John Kirk Townsend, an early 19th-century ...
The Uinta chipmunk is a medium-sized chipmunk, with adults ranging from 20 to 24 cm (7.9 to 9.4 in) in length, including the tail at 7 to 11 cm (2.8 to 4.3 in), and weighing an average of 67 g (2.4 oz). The predominant color of the summer coat varies from yellowish brown-grey to dark brown, often with a reddish tinge.
Palmer's chipmunk resembles other chipmunks in that it has solid black and white stripes that run down its body dorsally. The body of the chipmunk is tan while its ventral side is more pale. Total body length is 210–223 millimetres (8.3–8.8 in), with a tail of 86.5–101.5 millimetres (3.41–4.00 in). Adults weigh between 50 and 69.4 grams ...