Do elephants and hippos get along? Watch what happens when a herd of elephants encounters a sleeping group of hippos.

Being a puppy can be tiring, so this precious pup is recharging by taking a nap in its owner's jacket. But how much sleep do puppies need?

Knowing and adapting to the ideal schedule for your sleep chronotype could improve your rest and help you accomplish daily tasks more efficiently, sleep experts say.

For most of us, getting less than seven hours of sleep translates into grogginess, sluggish thinking, and an overwhelming ...

Dogs may look adorable when they snooze, but their sleeping habits actually hold fascinating clues on how living with humans ...

Sleep studies have shown that people who share a bed with their dogs tend to wake up more often throughout the night. Dogs cycle between wakefulness and sleep multiple times per hour, which can ...

Daylight savings time might leave some people feeling a little groggy. But at Utah’s Hogle Zoo, animals have their own unique sleep schedules and ...

It was a day of love and compassion indeed, a rare but commendable move by a city government office! Fourteen surrendered and caught dogs and cats were ...

MB: Whom do you hope to reach? RP: I begin the book with a discussion of the evolution of sleep in the animal kingdom and its benefits, focusing of course on birds and the complexity of their lives.

Some animals have evolved the ability to survive with little to no sleep relying on unique adaptations to stay alert hunt or ...