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(Wayne Bennett / Corbis)

Wild Things: Life as We Know It

Butterfly GPS, glowing mushrooms, bat-hunting songbirds and more

Seriously Silly

macaques
(Maura McCarthy)

We aren't the only animals to make fools of ourselves mugging and cooing for infants. Scientists at the National Institutes of Health say rhesus macaques interact with babies in a similar fashion, smacking their lips and making prolonged eye contact. Goofy or exaggerated expressions may serve a similar purpose in monkeys and people: helping the young learn to communicate.

Learn more about Rhesus macaques at the Encyclopedia of Life.

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