What is which animal never sleeps?

It's a common misconception that any animal never sleeps. All animals studied so far exhibit some form of rest or reduced activity, even if it doesn't look like sleep as we understand it in humans. However, some animals require very little sleep and engage in unique sleeping patterns.

Some researchers believe that certain species of <a href="https://www.wikiwhat.page/kavramlar/Bullfrog">bullfrogs</a> might go without sleep during their mating season. Evidence suggests a lack of sleep deprivation effects, leading to speculation.

It's also worth noting that some migratory birds, like the <a href="https://www.wikiwhat.page/kavramlar/Alpine%20Swift">Alpine Swift</a>, can fly for extended periods (potentially months) while exhibiting unihemispheric sleep, where one half of the brain sleeps while the other remains active.

Finally, some <a href="https://www.wikiwhat.page/kavramlar/oceanic%20dolphins">oceanic dolphins</a> species also exhibit unihemispheric sleep.