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North American Beaver

Castor canadensis


The largest rodent in north America, with all brown fur, a large flat paddle-shaped tail and large, webbed hind feet reminiscent of a human diver's swimfins. The unwebbed front paws are smaller, with claws. The eyes are covered by a nictitating membrane which allows the beaver to see underwater. The nostrils and ears are sealed while submerged. A thick layer of fat under its skin insulates the beaver from its cold water environment.


Streams, ponds, lakes, marshes, ect..


After a Bald Eagle flew over me and my brother, we saw what we first thought was a dog swimming in the pond. Zooming in with my camera revealed that this was indeed a beaver.

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Spotted by

Bear, Delaware, Delaware, USA

Spotted on Mar 30, 2013
Submitted on Apr 1, 2013

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