Did you know that a giraffe sleeps only two hours each day?
The tall mammals are one of the most sleepless animals on Earth. On average the long-necked mammals fit about 2 to 4 hours of sleep time into a 24 hour period (and slightly less in the wild). This means that a giraffe will spend just 4 years asleep in its entire lifetime. Because of this, few people have actually encountered a slumbering long-neck in the wild.