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The largest beaver dam in the world + video
Beavers are natural loggers, they have sharp incisors that serve them as excellent saws. They also have incredibly strong jaws. With the help of their teeth, beavers cut trees, and then from these trees they build dams and “huts”. Beavers are so strong that they can move 10 times their body weight during the day. That's about 225 kg. One beaver a year falls more than 200 trees.
With enough trees at their disposal, they can easily expand their dams by several meters a day, and as a result, the landscape around them changes rapidly. In addition to large trees, these animals constantly dig up silt, collect rocks and debris from rocks, trying to deepen the reservoir, and thus make their home a little more spacious.
Looking at their hyperactive behavior and their tendency to build, it seems that these creatures, if given the opportunity, are able to build something truly colossal. And they did it in Canada's Buffalo National Park. The beavers of this park have been building their dam since the 70s, and have never shown a desire to stop their work. When the dam was last measured, its length was approximately 850 meters, and it was considered the largest beaver dam in the world. The length of most conventional beaver dams is 10–100 meters.
Surprisingly, the park staff did not even know about the existence of the dam until 2007. It was then that one researcher discovered it using Google Earth, while analyzing the melting of permafrost in northern Canada. It may seem strange that the dam went unnoticed for so long, but it should not be forgotten that the size of the park is huge (it is larger in area than Switzerland), and the area in which beavers live is very difficult to reach for most people. Beavers are currently busy expanding two smaller dams on either side of the main dam, and if they keep the current pace of construction for a few more years, it could all turn into one mile long superdam.
Other than humans, no other creature changes the environment the way a beaver does. It is because of this characteristic that local Indian tribes have always venerated beavers, and even given them the nickname “little people”.
Source: nlo-mir.ru
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