Beavers are basically tiny lumberjacks. They chew through whole trees to build dams, and their front teeth are perfect for the job. The hard outer enamel of a beaver’s teeth contains iron - yes, the same metal we use to make tools - which is why their teeth are bright orange instead of white.
That iron makes the teeth super strong and tough, so they can gnaw through hardwood without breaking. And because beavers’ teeth keep growing for their entire lives, the chewing doesn’t wear them down - it just keeps them sharp.
The dams beavers build aren’t just shelters. They flood whole valleys, creating ponds and wetlands where dozens of other animals - frogs, fish, ducks, moose - come to live. Beavers are what scientists call “ecosystem engineers”: their work literally re-shapes the landscape.
