DO ALL CREATURES SLEEP ???
Sleep is very important for humans as it gives our bodies and our brains time to rest, refresh , and develop so that we can concentrate, learn , and have fun when we're awake! But not every other creature is the same. Whether or not different animals and insects sleep ,is not confirmed.
There are so many different kinds of creatures in the world which make it hard to know for sure whether or not every single type of animals sleeps. And there are some creatures --tiny bugs or deep-sea dwellers--- who can be pretty hard to study .
What we do know is that at some point , most animals do appear to sleep or, at the very least, to rest in a sleep- like state . Most fish , for example, get their 'sleep' by resting and conserving energy, often hiding to protect themselves from danger . Most insects also appear to have separate 'sleep' or 'rest' patterns that are different from their waking time activities, although because most insects don't have eyelids their sleep doesn't always look the way we would except. Animals with sleep habits more like our own tend to be mammals, although birds and lizard also seem to get their sleep in a very human- like way.