Beavers are mammals of the group Rodentia. The Castor genus is a primarily nocturnal, large and semi-aquatic rodent. They are the second largest rodent in the world. The word Beaver in English is either borrowed from the old French ‘bievre’ or came from Russian word bobr, the root bhru has given “brown”. Beavers are Known .... their natural character or quality of building dams on rivers and streams, and of building their homes in the resulting pond. They use their front theeth to cut tress and other plants. Then both of them are used for building and for food. Beavers often construct dams before building their homes when there are not any ponds.A. for

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