Herbivore
Animals that eat plants.
Elephants, buffalo, birds, goats, cows, horses, sheep, giraffes,
gorillas, panda bears, rabbits, hippopotamus, deer, rhinoceros, zebras,
grasshoppers, and many more.
http://www.kidsplanet.org/wol/page_6.html
http://en.wikipedia.org/wiki/List_of_herbivorous_animals