Most of us are familiar with yawn contagion, which is the act of spontaneous yawning when someone nearby yawns, often but not always audibly. For humans, yawning can emanate from fatigue or boredom, ...

A trio of researchers from the University of Pisa has found that lions, like many other animals, engage in contagious yawning. In their paper published in the journal Animal Behavior, Grazia Casetta, ...

We love animals that sound human, but one TikTok cat clip takes this odd trend to a whole new level. In a now-viral video shared by Savannah J Meyer, we meet a particularly pretty Scottish Fold cat, ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American When is a yawn just a yawn? When is a yawn ...

Humans aren't alone when it comes to yawning — all vertebrates do it too, including fish, amphibians, reptiles, birds and mammals. But why? The "evolutionarily ancient" act of yawning likely serves a ...