TIL Beavers are triggered to build dams by the sound of running water. Where the sound is dictates where the dam is built and they work relentlessly until the sound stops. When scientists played the sound of running water on land on a device, the beavers covered it with sticks and mud.

Read more: https://en.wikipedia.org/wiki/North_American_beaver#Behaviour

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  1. Maybe, much like reasonable humans everywhere, the local beavers simply wanted peace and quiet. If the beavers had opposable thumbs and access to weaponry, this “scientific” report might have read considerably differently.

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