Researchers studying the speech patterns of snow monkeys (Macaca fuscata) in Japan have discovered that monkeys living in different areas can develop differences in their vocal accents.

The researchers recorded vocalizations of snow monkeys that had once belonged to the same population but who had been separated into two isolated groups five decades ago. By recording the vocalizations made by monkeys in each group, researchers were able to distinguish the differences in the accents of the two populations.

Find out more: Monkeys Have Accents, Japanese Study Finds (National Geographic)

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