Birds resting on a beach or a wire often look calm, almost detached from what is happening around them. But that stillness ...

Have you heard the saying about “sleeping with one eye open”? It’s a bit of metaphoric advice about staying vigilant—and a way to describe very light restless sleep. But sleeping with eyes open is ...

Some animals can sleep with just half their brain at a time. Understanding this phenomenon can help us learn more about human ...

Cats do some pretty weird things. If you share your home with one, you could probably list a few. Sometimes, their behaviors give their owners a good chuckle, like when they sleep in cardboard boxes, ...

Animals have evolved to sleep in extreme ways — for example, taking micro naps during parenting, sleeping on the wing during ...

Spiritual meaning of sleeping with eyes open will help you to understand this mystery. Sleeping with eyes open is not just a myth or a quirky saying. It happens to a lot of people, and it has a ...