Beavers use wood, mud, and plants to build lodges and dams for protection.
Build tall mounds with elaborate tunnels and ventilation systems.
Skillfully weave grass and twigs together to create hanging nests.
Excavate intricate underground tunnels that include several rooms and exits.
Make paper-like nests out of saliva and chewed wood pulp.
Make transportable shelters out of hollow materials or abandoned shells.
Build intricate underground colonies with designated spaces for feeding and nesting.