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The North American beaver (Castor canadensis) is one of two extant beaver species, along with the Eurasian beaver (Castor fiber). [23] It is native to North America and has been introduced in South America ( Patagonia ) and Europe (primarily Finland and Karelia ).
Historically, the North American beaver was trapped and nearly extirpated because its fur was highly sought after. Protections have allowed the beaver population on the continent to rebound to an estimated 6–12 million by the late 20th century; still far lower than the originally estimated 60–400 million North American beavers before the ...
The North American beaver is the state mammal of Oregon. ... Species range maps that support current ranges developed were done by Thomas A. O'Neil and Margaret M ...
North American beaver on the bank of the Lower Kern River. California Golden beaver taken from Snelling, California (elevation 256 ft or 78 m and Waterford, California (elevation 51 ft or 16 m) were stocked in 1940 at Mather Station (elevation 4,522 ft or 1,378 m) west of Yosemite National Park and in 1944 at Fish Camp (elevation 5,062 ft or 1,543 m) by the California Department of Fish and ...
The North American river otter (Lontra canadensis) is a native species in West Virginia but its population declined due to loss of habitat and excessive trapping. The last otter was reported to have been trapped in Tucker County in 1954; then a few were seen on the Greenbrier River in Pocahantas County and elsewhere in the early 1960s. [ 27 ]
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 ...
The North American beaver is the state mammal of New York. The following tags are used to highlight each species' conservation status as assessed by the International Union for Conservation of Nature :
The Eurasian beaver has shorter shin bones than the North American species and a narrower, less oval-shaped tail, making it less capable of bipedal locomotion. The anal glands of the Eurasian beaver are larger, and thin-walled, with a large internal volume, relative to that of the North American beaver. [citation needed]