Sleep is crucial for most animals, but some species exhibit unusual or minimal sleep behaviors. Here are five animals with distinctive sleep patterns.
Jellyfish don’t sleep in the traditional sense, but they do enter a restful state where their pulsation and responsiveness to their environment decrease significantly.
Dolphins can rest one half of their brain while keeping the other half active. Interestingly, newborn dolphins don’t sleep at all for their first month.
Bullfrogs lack a clear sleep-wake cycle. Instead, they experience periods of inactivity that vary depending on environmental factors like temperature and humidity.
Fruit flies can live without sleep for their entire lifespan. Remarkably, this doesn’t seem to impact their health or longevity.
Giraffes can stay awake for a full day without problems. When they do sleep, it’s usually only for about five minutes at a time.