Beavers

Beavers are large rodents famous for building dams. They are found in North America, Europe, and Asia. Beavers use their sharp teeth to chew down trees and build structures in rivers and streams. They are nature's engineers!

Building Dams

Beavers build dams across streams to create deep ponds where they feel safe. The dams are made of sticks, mud, and rocks. The largest beaver dam ever found was over 2,700 feet long! Behind the dam, beavers build a lodge where the family lives. The entrance is underwater.

A map showing where beavers live around the world.
A map showing where beavers live around the world. (Mariomassone / Wikimedia Commons)

Nature's Engineers

Beaver dams are actually good for the environment. They create wetlands that provide homes for fish, frogs, birds, and many other animals. Beavers can cut down a tree in just minutes using their powerful orange teeth. Their teeth never stop growing.

Fun Facts

  • A beaver's teeth are orange because they contain iron.
  • They can hold their breath for up to 15 minutes.
  • Beaver dams can be seen from space.

Did You Know?

Beavers have see-through eyelids that work like swimming goggles! They also have special flaps that close their ears and nose when they dive underwater.