"A beaver's teeth are chemically different from our teeth, not structurally different," Joester said. "Biology has shown us a way to improve on our enamel." The discovery could lead to a better ...

Koki and Aviva figure out how beaver teeth work. Aviva wants to add beaver teeth to the beaver creature power suits. Before she can, she needs to research how they work. Koki pulls up a beaver scan on ...

— 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 because ...