The reason that zebras have stripes has been a mystery for some time. Is it for camouflage? To keep cool? To attract mates? To make them look thin? Actually, it’s none of the above. Image © wikimedia
A group from the University of California, Davis recently discovered that striping is heavier in areas where biting flies are more prominent. And their study published in Nature Communications claims the real reason that stripes are useful is as a bug repellent. This follows previous studies which showed that horseflies tend to avoid horses painted with stripes.
You can read more at io9.