However, the iron in beaver teeth turns out to do a better job of fighting cavities than fluoride. Beavers don't get tooth decay thanks to this iron, ...

Modern beaver incisors (front teeth) are sharp and chisel-like; giant beaver incisors were bulkier and curved, and lacked a sharp cutting edge. The species suddenly became extinct 10,000 years ago.

The mountain beavers don’t need those teeth now, but they did about 10 to 15 million years ago, which is when these teeth features first appear in the fossil record.

Why do beavers slap their tails? It's a question that has puzzled and fascinated nature lovers for years. Imagine a quiet ...

— Cora Wieneke, Mount Horeb, Wis. A Erin Flynn, conservation education curator at Henry Vilas Zoo in Madison, Wis.: Squirrels, beavers, chipmunks and rabbits all have similarly shaped teeth ...

Set Of Dice, Beaver Teeth National Museum of Natural History. Click to open image viewer. CC0 Usage Conditions Apply Click for more information. Click to view download files. Click to view IIIF info.

The beavers' toothy grins were made from the baby teeth of Rob and his brother, Adam. "I was completely speechless," Linkhart, 36, told TODAY Parents.