From Academic Kids
In zoology, a herbivore is an animal that is adapted to eat primarily plant matter (rather than meat). Although such animals are sometimes refered to as being vegetarian, this term is more properly reserved for humans who choose not to eat meat as opposed to animals that are unable to.
Herbivores can be further classified into various sub-groups, such as frugivores, which eat mainly fruit; or folivores, which specialize in eating leaves. This specialization is far from universal, however, and many fruit- and leaf-eating animals also eat other parts of plants, notably roots and seeds. The diets of some herbivorous animals vary with the seasons, especially in the temperate zones, where different plant foods are most available at different times of year. Below here is a list that includes animals that are unable to chew or digest animal matter.
Animals that are true herbivores
The following are herbivorous animals: