Yawn - Wikipedia

Did you know almost all #vertebrate animals, including mammals, birds, reptiles, amphibians, and even fish, experience #yawning?

The study of yawning is called #chasmology!

en.wikipedia.org/wiki/Yawn

Chasmology is the scientific study of yawning. This field has discovered that yawning is contagious, and that all vertebrates yawn, not just humans; but we still haven't figured out why we do it, or why it's contagious. Yawn...

Useless Facts, Badly Drawn #420: Chasmology.
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#chasmology #yawning #yawn #sleep #science #biology #health #strangebuttrue #ignobelprize #ignobel #webcomics #comics #uselessfacts #uselessfactsbadlydrawn