Beavers have long incisors that get their orange color from an iron-rich protective coating of enamel. Their teeth grow continuously throughout their life, but daily use helps trim them down.

What Colour are beavers teeth?

The beaver's large front (incisor) teeth are bright orange on the front and grow continuously throughout their life. These teeth are beveled so that they are continuously sharpened as the beaver gnaws and chews while feeding, gir- dling, and cutting trees.

How do beavers teeth stay sharp?

Beaver teeth also need to be sharpened as they dull down, but they don't have a knife sharpener. Instead, beaver teeth are self-sharpening. On the front a beaver tooth is the hard enamel with the iron. The inside of the tooth is softer and wears away as the beaver gnaws, so that leaves a sharp edge of tough enamel.