Why do beavers build dams?

Answer

Beavers are nocturnal, semi-aquatic large rodents that belong to the genus Castor. They build dams so as to provide them with deep, still water which helps in floating building materials and food for them and it also protects them from predators.
Q&A Related to "Why do beavers build dams?"
Beavers build dams as a means of shelter and lodging. They can build several dams if they need to. Most of the building is done over night using limd=bs and braches from trees.
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A beaver's home (lodge) is built on an island of mud, stone, and tw...
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Beavers and their dams play an important role in nature. Because of the dramatic effects their dams have on surrounding ecosystems, these mammals are considered a keystone species
http://animals.howstuffworks.com/mammals/beaver-da...
The dam creates a large water body to protect themselves and their family. Most predators are somewhat restricted in water. Beavers are fast swimmers and can hold their breathe for
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1 Additional Answer
Beavers build dams because of noise. Apparently, beavers can't stand the noise of the water when it moves so they build dams to get the noise to stop. That is why they build dams where the water is noisiest. You can find more information here: http://www. naturealmanac. com/archive/beaver_dams/beaver_dams. html
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