Feeding on or subsisting primarily on grass; characterized by a diet of grass and grass-like plants.
From Latin 'gramen' (grass) plus 'vorare' (to devour) with the adjectival suffix '-ous.' This parallel term to 'herbivorous' emphasizes grass specialization.
Graminivorous mammals have evolved amazing teeth—they never stop growing because grass is so abrasive it wears them down constantly, yet they keep chewing anyway!
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