The largest beaver dam is located in a remote area of Wood Buffalo National Park, and is thought to have been the work of several beaver families. Thus far, it seems like only one person has visited the dam: an explorer named Rob Mark. Mark has hiked in the Amazon rainforest, but described his mosquito-filled trek to the beaver dam as "the longest, hardest ten miles I have ever travelled."
The Largest Beaver Dam In The World
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Key Facts In This Video
Most beaver dams are 5 to 10 meters (16 to 33 feet) long and form small ponds behind them. 00:45
Scientists believe that the sound of running water triggers damn-building behavior in beavers. 01:54
Castoreum, the oil from beaver anal glands, smells like strong vanilla. 03:13
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