35 Fascinating Facts You Didn’t Know About Animals

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The toothy grins of chimps in TV shows don't mean what you think. That expression signals fear or anxiety in a chimp's world. They make a grunting sound when happy.

The toothy grins of chimps in TV shows don’t mean what you think. That expression signals fear or anxiety in a chimp’s world. They make a grunting sound when happy.

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