Graminivore

In zoology, a graminivore (not to be confused with a granivore) is an herbivorous animal that feeds primarily on grass (specifically "true" grasses, plants of the family Poaceae). The word is derived from Latin graminis, meaning "grass", and vorare, meaning "to eat." Graminivory is a form of grazing.

Horses, cattle, capybara, hippopotamuses, grasshoppers, geese, and giant pandas are examples of graminivores. Some carnivores, such as dogs and cats, are known to eat grass occasionally.

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  Red kangaroo eating grass

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  Horses also eat grass

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  A capybara grazing at Hattiesburg Zoo