behavior behavior

An orange clownfish, Amphiprion percula, lives in symbiosis with a host anemone on the Great Barrier Reef. Alejandro Usobiaga/Scientific Reports hide caption

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Alejandro Usobiaga/Scientific Reports

Turns out that humans aren't the only animals that contagiously yawn. iStockphoto hide caption

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Yawning May Promote Social Bonding Even Between Dogs And Humans

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