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

Despite not having a brain, jellyfish sleep for around eight hours a day, just like humans according to a new study.

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

Learn how jellyfish and sea anemones are changing what we know about the evolutionary purpose of sleep.

With increased DNA damage from UV radiation or other reasons, the researchers also observed the jellyfish and sea anemones ...

Animals that navigate extreme conditions and environments have evolved to sleep in extreme ways Every animal with a brain needs sleep — and even a few without a brain do, too. Humans sleep, birds ...

In jellyfish and sea anemones, neurons accumulate DNA damage while animals are awake and repair that damage during sleep.

A groundbreaking new study from Bar-Ilan University shows that one of sleep's core functions originated hundreds of millions ...

Group sleeping can impact when animals sleep, how long they sleep for, and how deeply they sleep. For example, groups of meerkats time their sleep according to “sleep traditions”; olive baboons sleep ...

Scientists already knew that the pair of shallow coastal ocean dwellers keep very different schedules of downtime: The ...

Humans and other animals encounter and remember countless experiences each day; when we sleep, groups of cells in the brain known as neuronal ensembles replay these experiences to consolidate them ...

As every seasoned cat parent knows, cats sleep a lot. Chances are your furry feline is presently snoozing. Cats sleep so much that many new parents become concerned! However, in most cases, it is ...