Old World beaver
Castor fiber

Although superficially similar to the European beaver (Castor fiber), there are several important differences between the two species.

Its name is derived from the former presence in the river of the European beaver (Castor fiber), a species extinct in Britain since the sixteenth century.

Castor fiber Linnæus 1758 is type species fixed by Linnean tautonymy (currently Castor fiber).

Castor fiber (European Beaver)

Eurasian beaver (Castor fiber)

The Eurasian beaver or European beaver (Castor fiber) is a species of beaver which was once widespread in Eurasia.

Historically, eight subspecies of Castor fiber were described, one for each of the eight 19th-20th century refugia where the species never became extinct.

European beavers (Castor fiber) were eventually hunted nearly to extinction in part for the production of castoreum, which was used as an analgesic, anti-inflammatory, and antipyretic.

Eurasian Beaver (Castor fiber)

European beavers (Castor fiber) are another species that use territory defense.