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The North American beaver is one of the official national wildlife of Canada symbols and is the official state mammal of Oregon and New York. [28] North American beavers are widespread across the continental United States, Canada, southern Alaska, and some parts of northern Mexico.
Skull of a beaver. Castoridae is a family of rodents that contains the two living species of beavers and their fossil relatives. A formerly diverse group, only a single genus is extant today, Castor. Two other genera of "giant beavers", Castoroides and Trogontherium, became extinct in the Late Pleistocene.
C. ohioensis skull cast (right), compared to a North American beaver skull (left). The former is a cast of a specimen from Shelby County, Iowa. At the AMNH. Castoroides species were much larger than modern beavers. Their average length was approximately 1.9 m (6.2 ft), and they could grow as large as 2.2 m (7.2 ft).
The North American beavers arrived to Wonders of Wildlife in December. They were relocated to the aquarium from a facility in Minnesota. Wonders of Wildlife seeks community feedback on naming two ...
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 ...
North American porcupine. Family Erethizontidae (New World porcupines) Genus: Erethizon. North American porcupine, E. dorsatum LC; Eastern gray squirrel in Manhattan American red squirrel. Family Muridae (Old World mice and rats) Genus: Mus. House mouse, M. musculus LC introduced; Genus: Rattus. Norway rat, R. norvegicus LC introduced; Black ...
The North American beaver is one of the official national wildlife of Canada symbols and is the official state mammal of Oregon and New York. North American beavers are widespread across the continental United States , Canada , southern Alaska , and some parts of northern Mexico .
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