The dams that beavers build to serve as the spot where they put up their lodge. The dam protects its lodge from predators. Since they are mostly aquatic animals, they like to stay in or near bodies of water.  Beavers enter their lodge by diving underwater and going through the tunnel that they also built. The lodge is where they mate, give birth, and raise their young kits. In a few years, the kits mature and go off to build their own dams and lodges and mate and bear their offspring.  Beaver dams can withstand extreme weather conditions with engineering made of wood, stones, and wet soil. The location where they build their dam contributes to their safety. All beavers possess this unique engineering skill. For example, the beavers of Wyoming.