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The marsh rice rat is generally of little importance to humans, which is perhaps why it is not as well studied as some other North American rodents. [158] In 1931, Arthur Svihla noted that virtually no information had been published on the habits and life history of the marsh rice rat since the 1854 publication of Audubon and Bachman's ...
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This species is the largest of the New World porcupines and is the second largest North American rodent, after the American beaver. The head-and-body length is 60 to 90 cm (2.0 to 3.0 ft), not counting a tail of 14.5 to 30 cm (5.7 to 11.8 in). The hind foot length is 7.5 to 9.1 cm (3.0 to 3.6 in).
The mountain beaver (Aplodontia rufa) [Note 1] is a North American rodent.It is the only living member of its genus, Aplodontia, and family, Aplodontiidae. [2] It should not be confused with true North American and Eurasian beavers, to which it is not closely related; [3] the mountain beaver is instead more closely related to squirrels, although its less-efficient renal system was thought to ...
[3] [4] In North America, on the basis of mean linear dimensions and body masses through the year, the smallest species appears to be the Alaska marmot and the largest is the Olympic marmot. [ 5 ] [ 7 ] [ 8 ] [ 6 ] Some species, such as the Himalayan marmot and Tarbagan marmot in Asia, appear to attain roughly similar body masses to the Olympic ...
Rock squirrels are one of the largest members of the family Sciuridae, with adults measuring up to 21 inches (53 cm) in length. [3] In front and on top, the squirrel's coat is a speckled grayish brown; on the rear and bottom, the gray becomes a more mottled brownish-black tone.
The eastern woodrat is a rodent of medium size, with an average length of 21.2 centimetres (8.3 in) and weight of 245 grams (0.540 lb), [3] but grows up to 17 inches (43 cm) long. [5] The body is short and stocky and the tail is exceptionally long (15–20 centimetres (5.9–7.9 in)).
The black-tailed prairie dog (Cynomys ludovicianus) is a rodent of the family Sciuridae (the squirrels) found in the Great Plains of North America from about the United States–Canada border to the United States–Mexico border. [3] Unlike some other prairie dogs, these animals do not truly hibernate. The black-tailed prairie dog can be seen ...