Mental Floss

The Number of the Day: 1.9

Jason English
facebooktwitterreddit

According to the good people at Wired, giraffes only require 1.9 hours of sleep per day.

Related Fact: On the other end of the spectrum, the brown bat needs to sleep nearly 20 hours.

[Source: @WiredResearch. Image credit: Flickr user gr1234. See previous Numbers of the Day here.]

facebooktwitterreddit