Die Gattung gehört zur Familie Biber, Castoridae.
Kanadischer Biber, Castor canadensis![]() "Untitled" by Minette Layne via Flickr, Creative Commons Attribution ShareAlike. | Europäischer Biber, Castor fiber![]() "Praying for a Sunny Weekend.....(Happy Furry Friday.:O))" by Law_keven via Flickr, Creative Commons Attribution ShareAlike. |