Zebras do not have a defense against alligators. They just have to keep moving so they can get out of the river faster. Zebras have flexible ears. They can move them in all directions so they can hear things all around them. This is another way to avoid and escape from predators.
Zebras also have a good sense of smell, good eyesight, and excellent hearing.
All these senses help them to avoid predators. Sometimes the zebras in a herd groom each other. Zebras sometimes have special grooming friends in the herd. They groom each other to remove lice and ticks, and often they groom each other at the same time. Zebras are herbivores.