No one is entirely sure why we yawn — it’s one of the questions that still remains a mystery. But that hasn’t stopped scientists from having a few different theories regarding the human urge to yawn.

Ever noticed how one yawn can trigger many? Science reveals how your brain copies others, why yawns spread so easily, and ...

Research suggests dogs contagiously yawn, but there's no scientific consensus the meaning. The question: Is it true that human yawns are contagious to dogs? The science: Some dog owners swear that ...

Yawning seems like such a simple act, yet it holds surprising power over us. Just watching someone yawn — even a stranger — can suddenly trigger the irresistible urge to yawn yourself. Why does this ...

Yawning, an act so simple yet intriguing, holds a peculiar secret—it's contagious not just between humans but between humans and dogs as well. In our book, The Purest Bond: Understanding the ...

Humans’ first experience with yawning happens in utero, says Matthew D. Epstein, M.D., associate medical director of the Atlantic Health Sleep Centers in New Jersey. Yet, Earth-side, the ...

A study has revealed that dogs are likely to yawn when humans do. The Daily Telegraph reports that research presented at the National Ethology Congress in Lisbon shows that the 29 pets used for the ...

Experts discuss the mysteries of yawning at first ever international conference. —LONDON, June 28, 2010 -- For two days last week, they came to Paris. Over two dozen experts in the field of ...

Most vertebrates, including humans, yawn or exhibit similar behaviors. Spotted hyenas, which live in groups, yawn, as do orangutans, which often live alone. Parrots, penguins, and crocodiles also yawn ...

Is it true that human yawns are contagious to dogs? Some dog owners swear that when they yawn, their dog does, too. And they may be right. Contagious yawning is a well-known phenomenon among humans — ...