This word comes from the Latin “gramen,” meaning “grass, fodder,” combined with “-vorous,” a Latin suffix that means “eating or devouring.” Grazing animals, such as cattle and sheep, are primarily graminivorous. However, there are many animals that have graminivorous habits, even if they don’t exclusively eat grass. For instance, cats and dogs are known to eat grass occasionally. Typically, dogs consume grass when they have upset stomachs, but it can be a sign of boredom, or just a habit.