Animals that eat plants are primarily classified into two categories: **herbivores** and **omnivores**.

## Herbivores
Herbivores are animals that consume only plants as their primary source of nutrition. They include a wide variety of species across different animal groups:

- **Mammals**: Examples include cows, horses, giraffes, elephants, and pandas[1][2][3].
- **Birds**: Some herbivorous birds are parrots and ostriches[2].
- **Insects**: Many insects like aphids, grasshoppers, and honeybees are herbivorous[2].
- **Reptiles/Amphibians**: Tortoises and iguanas are examples of reptilian herbivores[2].

Herbivores can be further categorized based on their feeding strategies:
- **Frugivores** (fruit-eaters)
- **Folivores** (leaf-eaters)
- **Granivores** (seed-eaters)
- **Nectrivores** (nectar-eaters)[4].

## Omnivores
Omnivorous animals consume both plants and animals. While check here they do eat plants regularly, they animals that eat plants also incorporate meat into their diet. Examples include bears and humans[1][6].

## Additional Notes
While carnivorous animals primarily consume meat, they may occasionally eat plants if other food sources are scarce[1]. However, this is not a preferred dietary choice for them.

Citations:
[1] https://www.sciencing.com/type-animals-eat-plants-7266888/
[2] https://www.yourdictionary.com/articles/herbivore-examples
[3] https://byjus.com/english/herbivorous-animals-names/
[4] https://en.wikipedia.org/wiki/Herbivore
[5] https://www.shutterstock.com/search/plant-eating-animals
[6] https://www.adc-fl.com/dentist-office/englewood-fl-34223/guide-to-herbivores-ominvores-and-carnivores