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Elephants Sing Like Humans? Elephants "sing" at a frequency so low we can't hear them, scientists have claimed. Researchers have found that elephants use an ultrasound rumble, often too low for humans to hear, to keep the herd together and for males to find mates. It allows the animals to communicate over distances of up to six miles. The low-pitched elephant calls occupy a frequency range below 20 Hertz...

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