Zebras live in grasslands and their wavy lines of black-and-white coat blend in with the waving grass around them. This makes it difficult to spot. Moreover, the lion which is its biggest predator, is colour-blind. If the zebra stands perfectly still, a lion will not be able to make out that it is there at all. Zebras usually travel in groups. When a zebra is travelling in a group, its stripes merge with the stripes of hundreds of others, creating confusion in a lion’s mind.