The North American beaver (Castor canadensis) is a semiaquatic animal native to North America. It is one of the official national wildlife of Canada symbols and is the official state mammal of Oregon and New York.
The Eurasian beaver (Castor fiber) is a beaver species that was once widespread in Eurasia but was hunted to near-extinction for both its fur and castoreum. At the turn of the 20th century, only about 1,200 beavers survived in eight relict...
