5 animals that never sleep and why
Each of these creatures has adapted to its environment in amazing ways.
For humans, sleep is necessary to recharge our bodies and minds. But did you know that not all animals sleep the way we do?
Some animals hardly rest, while others never really sleep at all! This might sound impossible to us, but it’s perfectly normal for them. They have some lifestyles that don’t require the kind of deep sleep that most creatures need.
1. Bullfrogs
Bullfrogs don’t need sleep like humans do. Researchers found that even if bullfrogs rest, they stay alert and can quickly respond to any danger around them. This might be because they need to stay safe from predators and keep an eye out for food. They may rest their eyes, but their brains are always active and aware of their environment.
2. Dolphins
Dolphins are some of the smartest creatures in the sea, and their sleep habits are just as fascinating. Unlike humans, dolphins don’t fully shut down when they rest. Instead, they sleep with only one side of their brain at a time. The other half stays awake to watch for predators, come up to the surface to breathe, and ensure they don’t drift too far away. This way of sleeping, known as “unihemispheric slow-wave sleep,” helps dolphins stay alert and alive in the vast ocean.