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Listen: Hippo back talk could help save one of the world's last huge herbivores
imageBROKER/Anette Mossbacher/imageBROKER/Getty Images
Hippopotamuses are very vocal animals, although we know little about why they make so much noise.
They often call and respond to each other, like a conversation.
According to new research, hippos can even recognize their pals’ voices when they’re recorded and played by a loudspeaker.
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