Giraffes have the least sleep. Sleeping is not easy for these gentle giants with long necks. As it’s a struggle for the prey animals to lie down or get up quickly, they resort to five-minute naps during the day and thus manage with just half an hour or sleep per day. With the shortest sleep requirement among mammals, giraffes can be caught napping with their neck arched and their head resting on their rumps.
Adult giraffes occasionally sleep like this, too, but rarely for more than a few minutes at a time. In fact, they almost never sleep for longer than five minutes at a stretch in the wild, often modifying the position so that they remain standing with their head and neck curved around to rest on their hindquarters. More often, they sleep fully standing—again, in short bursts—or experience a sort of half-sleeping resting period, in which the eyes remain half-open, the animal stays fully upright, and the ears continue to twitch.
All in all, adult giraffes get by on just 30 minutes of sleep a night (on average). It’s the shortest sleep requirement in the entire animal kingdom!
Picture Credit : Google
