Thursday, August 25, 2016

Yawning is not just about being tired

Humans yawn a lot. You are probably thinking about doing it right now. But many other animals do not. In particular, most plant-eating mammals do not yawn, at least not often. Horses are one of the few that do yawn regularly. Now researchers have tracked horses' yawning, to try and figure out why they do it. Watch the video here to discover what they found.


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