What is a herbivore?

HERBIVORE is any animal that eats chiefly plants. Herbivores are also called herbivorous ani­mals. Animals that primarily eat flesh are called carnivores. Those that eat both flesh and plants are omnivores.
There are many kinds of herbivores. Some of these animals, including cattle, deer, and horses, eat grasses. Other herbivores, including many birds, eat seeds. Earthworms are among the herbivores that eat dead plant material.

zebra

The zebra is a herbivore animal