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The beaver is the largest rodent in North America and competes with its Eurasian counterpart, the European beaver, for being the third-largest in the world, both following the South American capybara and lesser capybara. The European species is slightly larger on average but the American has a larger known maximum size.
The Eurasian beaver (Castor fiber) or European beaver is a species of beaver widespread across Eurasia, with a rapidly increasing population of at least 1.5 million in 2020. The Eurasian beaver was hunted to near-extinction for both its fur and castoreum , with only about 1,200 beavers in eight relict populations from France to Mongolia in the ...
The elk (pl.: elk or elks; Cervus canadensis) or wapiti, is the second largest species within the deer family, Cervidae, and one of the largest terrestrial mammals in its native range of North America and Central and East Asia.
There are two extant species: the North American beaver (Castor canadensis) and the Eurasian beaver (C. fiber). The Eurasian beaver is slightly longer and has a more lengthened skull, triangular nasal cavities (as opposed to the square ones of the North American species), a lighter fur color, and a narrower tail. [11]
North American beavers (Castor canadensis) are the largest rodent species in the United States and the second largest in the world. They have stocky bodies, weigh between 35 and 65 pounds, and are ...
What little is known about this race of elk has been gleaned from remains and historical references. Mitochondrial DNA studies in 2004 indicate that Cervus canadensis are a species distinct from European red deer. Prehistoric evidence of eastern elk from 2500 years ago has been found in Alabama and Delaware.
North American beaver: Castor canadensis: Extant: 50 kg (110 lb) 5: Lesser capybara: Hydrochoerus isthmius: Extant: 45.4 kg (100 lb) 6: Eurasian beaver: Castor fiber: Extant: 40 kg (88 lb) 7: Cape porcupine: Hystrix africaeaustralis : Extant: 30 kg (66 lb) 8: Crested porcupine: Hystrix cristata : Extant: 27 kg (60 lb) 9: North American ...
Rodents make up the largest order of mammals, with over 40% of mammalian species. They have two incisors in the upper and lower jaw which grow continually, and must be kept short by gnawing. Beaver. Family Castoridae (beavers) Genus: Castor. North American beaver, C. canadensis LC; Muskrat. Family Cricetidae (New World mice, rats, voles ...