Sleep is an essential function of life for most creatures big and small ... a good night’s (or day’s!) sleep. BBC Bitesize takes a look at the surprising ways four different animals get ...

Artificial lights at night are causing serious disruption to these insect night shift workers. That’s a problem for everyone.

Sleep is a vital component of life for many creatures, serving as a crucial mechanism for energy conservation, growth, and survival. In the animal kingdom ... are active at night, and long ...

The researchers argued that the findings show sleep doesn’t have to be in one long block to be helpful. For some animals, even small bits of sleep can add up and be useful (see graphic).