Zebra stripes are special like a person’s fingerprints. There are plains zebra, Grévy’s zebra and the mountain zebra.The plains zebra is the most common. The numbers of all three are shrinking because of habitat loss, hunting, and competition with livestock for water and their favorite food, grasses. In fact, zebras graze on grass so much that their teeth have to keep growing so they don’t wear out! Why do they even have stripes?