The second key observation about laughter is that it's a vocalization, a sound. And across the animal kingdom, sounds serve the purpose of active communication. Cobras hiss to scare off predators. Dogs bark as a warning sign. Male birds sing to attract females... #KevinSimler
The second key observation about laughter is that it's a vocalization, a sound. And across the animal kingdom, sounds serve the purpose of active communication. Cobras hiss to scare off predators. Dogs bark as a warning sign. Male birds sing to attract females... #KevinSimler
— English Quotes (@english_quotes) Oct 6, 2023
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