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Unusual Sleeping Habits of Earth’s Creatures
Similar to horses, elephants are also able to sleep standing up. As prey animals, they need to be able to remain alert and run away quickly. Shutterstock

1. Elephants sleep for two hours every day. 

With averaging just two hours of sleep a night, wild elephants are the lightest-known sleepers of any mammal. They might have little competition for this title in the giraffe. Wild elephants have more dangers and pressure to find food; wild animals tend to sleep less. The majority of the time, elephants will sleep standing up. Occasionally they would lie down when they require rapid eye movement (REM) sleep. During REM, the muscles usually relax, making it impossible to remain standing. However, this amount is so small that it doesn’t happen often.

Unusual Sleeping Habits of Earth’s Creatures
Photo Credit: New Scientist

Wild elephants are not too picky about where they sleep, but they are also on high alert when a predator presents itself. Surprisingly, their physical activity level during the day doesn’t directly impact how long they doze off. Bigger animals generally tend to sleep less, likely because they have to spend much time eating. Captive elephants tend to sleep a little longer, averaging three to seven hours a day. However, they do not have to worry about the threat of predators or where their next meal will come from. Researchers have uncovered that while elephants slept for an average of two hours a day, it was not consecutively. Instead, it was in four to five short bursts and occurred primarily between the nighttime hours. Each time the elephants slept in different places each night.  


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