Have you ever noticed how your cat can easily twist, contort and fold into positions that would turn even the best yoga instructor green with envy? If so, cats must thank their flexible bodies. Cats ...

A protective mucous cocoon surrounds this parrotfish as it sleeps in Australia's Great Barrier Reef. This layer of protection helps fend off predators so parrotfish can get a good night's rest.

Sleep is one of nature's greatest mysteries, and while we humans aim for seven to nine hours a night, some animals take it to ...

Dogs may look adorable when they snooze, but their sleeping habits actually hold fascinating clues on how living with humans has shaped canine behaviour. The sleep-wake patterns of the dog can also ...

Most animals don’t keep the same schedule we do. While we try to squeeze in eight hours and call it a good night, many animals snooze through more than half the day—and some barely stay awake at all.

A few weeks ago when I was out cycling with some friends, we saw a few birds who looked like they were sleeping. Someone asked me what they were doing, and I said they were resting or sleeping but I'd ...

It's estimated that on average, dogs sleep around 12-14 hours a day. Of course, many variables can influence how much sleep any individual dog gets and needs, including the activity of people and ...