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A herbivore is an that is adapted to eat primarily matter (rather than other ).
Herbivores can be classified into various sub-groups, including
- - selectively feeds on ; (also called a )
- - unselectively feeds on grass or other vegetation (in the past it may have been ferns)
- - (e.g. ) that feeds on leaf-like vegetation (e.g. large )
- - aquatic invertebrate that rasps algae from the surface of the substrate (e.g. )
- - feeds mainly or only on
- - feeds on or - e.g. , although pollen-eating insects could be called ""
Other specialisations, among herbivorous and other , include seed-eaters (""), plant fluid-feeders (""), and those specialized to feed on wood ("") or roots ("").
In larger animals, the degree of specialization is not so advanced, however, and many fruit- and leaf-eating animals also eat other parts of plants, notably and . The diets of some herbivorous animals vary with the seasons, especially in the , where different plant foods are most available at different times of year.
Herbivores form an important link in the food chain as they transform the sun's energy stored in the plants to food that can be consumable by and up the food chain. As such, they are termed the primary consumers in the food chain.
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