It’s hard to be a paddler in the Northwest and not have warm feelings toward the North American beaver, (Castor canadensis), Oregon’s state animal. While beavers are most active at night, most paddlers catch at least an occasional glimpse of the well-furred rodents. Now comes reassuring news for those who may have worried about beaver dental hygiene; iron in beavers’ teeth provides powerful protection against decay. That’s probably pretty handy, since a beaver is surely dependent on his or her teeth, and while the clever rodents are well-known for their dam-building acumen, dental clinics appear not to be in their architectural repertoire. The Oregonian expands: http://www.oregonlive.com/pacific-northwest-news/index.ssf/2015/02/beaver_teeth.html#incart_river