Researchers from the University of the Witwatersrand tracked two wild matriarch elephants in Botswana’s Chobe National Park for 35 days using GPS collars and trunk trackers. The study revealed that wild elephants have the shortest sleep duration of any mammal, averaging just two hours of sleep per night, typically between 2:00 AM and 6:00 AM.
The elephants frequently stayed awake for up to 46 hours straight, traveling dozens of kilometers to evade poachers or predators. Interestingly, captive zoo elephants sleep significantly longer—around four to six hours daily—due to the absence of wild threats.
Furthermore, these wild elephants only slept lying down once every three to four days. Because REM sleep requires lying down, this unique behavior suggests that wild elephants enter the dreaming phase far less frequently than most other animals.