Animals are amazing and so are their traits, from the mating ritual and eating habits to their ability to sense danger and their sleeping habits, we are always fascinated by how little we know about them. This infographic dwells into animals and their fascinating sleeping habits. For example did you know that sea otters fall asleep holding hands so that they don’t drift away into the current. Or that dolphins actually sleep one side of the brain at a time, so that they can maintain their buoyancy and they don’t drown themselves. While these animals take sleeping to one extreme there is another that does the exact opposite and hardly gets any sleep. Turns out giraffes manage to only sleep a wink the whole day because they have to be on the lookout for predator.