Animals that eat plants are called herbivores. Here are some examples:
* Mammals: Cows, deer, horses, rabbits, squirrels, elephants, giraffes, etc.
* Birds: Chickens, ducks, parrots, sparrows, etc.
* Insects: Grasshoppers, caterpillars, aphids, etc.
* Reptiles: Iguanas, tortoises, some lizards, etc.
Let me know if you have more questions about herbivores!