Johanna Simkin does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

Yawning—such an odd physiological phenomenon. Humans yawn, and so do dogs, monkeys, birds, and just about every known vertebrate species other than giraffes (yes, that is also odd). Over a decade ago, ...

Have you ever wondered why yawning is contagious? It may be a way to bond with your fellow human being, but scientists have other theories. We’re one sentence into this story and I’ve already yawned ...

Why do we yawn? Most vertebrates, including humans, yawn or exhibit similar behaviors. Spotted hyenas, which live in groups, ...

We often call domestic dogs our "best friends" and clearly they influence our behavior in many different ways. Anyone who has lived with one or more of these remarkable beings knows how often their ...

Yawning isn’t the only bodily function that’s contagious. Japanese scientists have discovered that chimpanzees are more likely to urinate when they see other primates going No. 1 as well, as detailed ...

A new study on "contagious urination" only looked at captive chimpanzees, but researchers suspect the phenomenon may also exist in the wild. Kumamoto Sanctuary If you see or hear someone yawn, you ...

Oakland Zoo animals hold their own ‘yawn challenge’ Various animals throughout the Oakland Zoo can’t help but let yawns slip as the day goes on — and you will be tempted to join in on the sleepy ...