Submitted by Snoo-82132 t3_y9a6rk in askscience
D15c0untMD t1_it7488x wrote
Reply to comment by RationalFragile in Is building dams a learned behaviour for beavers? by Snoo-82132
I read of an experiment where beavers started to build dams even when there was no water around but scientists played river sounds over a speaker
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