Czech beavers built a dam in 2 days, which the authorities had been coordinating for 7 years.
Beavers lead an active lifestyle in the water not only in summer, but also in winter. For this, beavers need reservoirs deep enough so that in winter the water in them does not freeze to the very bottom. But, unfortunately, beavers do not always come across such deep rivers. So beavers have to build...
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https://ct24.ceskatelevize.cz/clanek/regiony/bobr-v-brdech-vytvoril-mokrad-usetril-statu-miliony-357585
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