The bigger an animal's yawn, the bigger its brain, study finds

Thursday, October 6, 2016 - 05:31 in Biology & Nature

Do you know someone who spends a long time yawning? He may not be lazy he may just have a big, neuron-rich brain. A new study published this week in Biology Letters found the amount of time it takes for a mammal to complete a yawn strongly predicts the size of the critters’ brain and number of...

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