In the animal kingdom, some species stand out for their remarkable sleeping habits, spending an extraordinary amount of time resting. From the cuddly koala, which can snooze for up to 22 hours a day, ...

All animals need sleep, but some sleep more than others. The koala is known for sleeping the most of any animal. This long ...

Unlike humans, whales and dolphins have evolved a fascinating way to sleep without drowning. They utilize unihemispheric ...

How does one of the largest animals in the world sleep ... Some scientists theorise that their sleeping habits could be the result of living in a loud and crowded group where sleep is often ...

Animals can sleep on the wing, standing up, sitting in a tree or diving in the ocean. Many don't close their eyes, and some don't even have eyelids. Here are some of the strangest ways to snooze.

Animals like stone beings defy nature's laws, need less sleep. When people recharge during sleep, while some animals are ...

What would happen if we eliminated sleep from our lives? We can't even imagine it, can we? Because sleep is essential for ...

Recent research on animal sleep behavior has revealed that sleep is influenced by the animals around them. Olive baboons, for instance, sleep less as group sizes increase, while mice can ...