When an enormous herd of wildebeest strode out onto the Kenyan savanna early one morning, wildlife photographer Ingo Gerlach knew he had to capture the moment. What he didn’t expect was to find a zebra cleverly hidden within the herd, grazing in almost perfect camouflage. Considering the zebra’s bright white stripes, it’s surprising to think it could blend in with the wildebeest so easily. Can you spot the zebra in this photo? Scientists believe that zebra stripes function as camouflage, not unlike the military fatigue design for uniforms. According to How Stuff Works, the vertical lines of the zebra’s coat help it blend in with the surrounding grass, while breaking up its own contours. And blend in it does—the zebra in this photo is astoundingly difficult to spot at first. The Dodo shared the image on Twitter, where it quickly went viral, with users struggling to spot the striped animal. “Is …