Baby kangaroos - called joeys - are always a joy to see, but especially when they're from a rare species whose numbers are ...

An Instagram account posted a video of a reckless human-wildlife encounter at Grand Canyon National Park getting close to a ...

The great tit (Parus major) is the picture-perfect garden bird. With its colorful feathers and melodic, two-note whistle, it ...

The Golden Retriever pup seemed oblivious to her mom's commands and was happy just doing her own thing. Daisy was almost ...

Sea anemones and jellyfish don’t have brains, but the way their neurons behave during sleep shows some surprising ...

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

Frigatebirds snooze in flight while penguins take four-second catnaps Emperor penguin chicks stand together in Antarctica. Penguin parents take thousands of catnaps a day while looking after their ...

Tired of ads? Subscribers enjoy a distraction-free reading experience. Every animal with a brain needs sleep — and even a few without a brain do, too. Humans sleep, birds sleep, whales sleep, and even ...

Every animal with a brain needs sleep — and even a few without a brain do, too. Humans sleep, birds sleep, whales sleep and even jellyfish sleep. Sleep is universal “even though it’s actually very ...