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. by helenpriem, via Flickr, amazing artist in felting! Love all the browns she used.
6. “Interestingly, the acoustic analysis showed that the difference between the 'bee alarm rumble' and the 'human alarm rumble' is the same as a vowel-change in human language, which can change the meaning of words. Elephants use similar vowel-like changes in their rumbles to differentiate the type of threat they experience, and so give specific warnings to other elephants who can decipher the sounds."